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{
"project.name" : "nofib",
"repository.callsign" : "NOFIB",
"phabricator.uri" : "https://phabricator.haskell.org"
}
# Generated file patterns
*.exe
*.o
*.hi
.depend
.depend.bak
cachegrind.out.*
cachegrind.out.summary
perf.data
perf.data.*
dist-newstyle/
.ghc.environment.*
# Specific generated files
nofib-analyse/nofib-analyse
runstdtest/runstdtest
imaginary/bernouilli/bernouilli
imaginary/digits-of-e1/digits-of-e1
imaginary/digits-of-e2/digits-of-e2
imaginary/exp3_8/exp3_8
imaginary/gen_regexps/gen_regexps
imaginary/integrate/integrate
......@@ -22,12 +29,20 @@ imaginary/tak/tak
imaginary/wheel-sieve1/wheel-sieve1
imaginary/wheel-sieve2/wheel-sieve2
imaginary/x2n1/x2n1
imaginary/kahan/kahan
real/anna/anna
real/bspt/bspt
real/cacheprof/cacheprof
real/compress/compress
real/compress2/compress2
real/eff/CS/CS
real/eff/CSD/CSD
real/eff/FS/FS
real/eff/S/S
real/eff/VS/VS
real/eff/VSD/VSD
real/eff/VSM/VSM
real/fem/fem
real/fluid/fluid
real/fulsom/fulsom
......@@ -38,7 +53,8 @@ real/hidden/hidden
real/hpg/hpg
real/infer/infer
real/lift/lift
real/maillist/addresses.tex
real/linear/linear
real/maillist/runtime_files/*.tex
real/maillist/maillist
real/mkhprog/mkhprog
real/parser/parser
......@@ -50,10 +66,39 @@ real/scs/scs
real/symalg/symalg
real/veritas/veritas
shootout/binary-trees/binary-trees
shootout/fannkuch-redux/fannkuch-redux
shootout/fasta/fasta
shootout/fasta/fasta-c
shootout/fasta/fasta.faststdout
shootout/fasta/fasta.slowstdout
shootout/fasta/fasta.stdout
shootout/k-nucleotide/fasta-c
shootout/k-nucleotide/k-nucleotide
shootout/k-nucleotide/k-nucleotide.faststdin
shootout/k-nucleotide/k-nucleotide.slowstdin
shootout/k-nucleotide/k-nucleotide.stdin
shootout/n-body/n-body
shootout/pidigits/pidigits
shootout/reverse-complement/fasta-c
shootout/reverse-complement/revcomp-c
shootout/reverse-complement/reverse-complement.faststdin
shootout/reverse-complement/reverse-complement.slowstdin
shootout/reverse-complement/reverse-complement.stdin
shootout/reverse-complement/reverse-complement
shootout/reverse-complement/reverse-complement.faststdout
shootout/reverse-complement/reverse-complement.slowstdout
shootout/reverse-complement/reverse-complement.stdout
shootout/spectral-norm/spectral-norm
spectral/ansi/ansi
spectral/atom/atom
spectral/awards/awards
spectral/awards/*.stdout
spectral/awards/*.slowstdout
spectral/banner/banner
spectral/banner/*stdout
spectral/banner/*stdin
spectral/boyer/boyer
spectral/boyer2/boyer2
spectral/calendar/calendar
......@@ -64,7 +109,9 @@ spectral/constraints/constraints
spectral/cryptarithm1/cryptarithm1
spectral/cryptarithm2/cryptarithm2
spectral/cse/cse
spectral/dom-lt/dom-lt
spectral/eliza/eliza
spectral/exact-reals/exact-reals
spectral/expert/expert
spectral/fft2/fft2
spectral/fibheaps/fibheaps
......@@ -87,10 +134,13 @@ spectral/hartel/wang/wang
spectral/hartel/wave4main/wave4main
spectral/integer/integer
spectral/knights/knights
spectral/lambda/lambda
spectral/last-piece/last-piece
spectral/lcss/lcss
spectral/life/life
spectral/mandel/mandel
spectral/mandel2/mandel2
spectral/mate/mate
spectral/minimax/minimax
spectral/multiplier/multiplier
spectral/para/para
......@@ -117,6 +167,7 @@ gc/mutstore1/mutstore1
gc/mutstore2/mutstore2
gc/power/power
gc/spellcheck/spellcheck
gc/treejoin/treejoin
parallel/blackscholes/blackscholes
parallel/coins/coins
......
variables:
DOCKER_REV: 2b69e99de97bd5bf1fbdbf45852231c3dcb602b6
validate:
image: "registry.gitlab.haskell.org/ghc/ci-images/x86_64-linux-deb9:$DOCKER_REV"
tags:
- x86_64-linux
before_script:
- git clean -xdf
- sudo apt install -y time
- ghc --version
- cabal --version
script:
- make clean
- cabal update
- make boot mode=fast
- "make mode=fast NoFibRuns=1 2>&1 | tee log"
- "nofib-analyse/nofib-analyse log"
- |
# The following checks that `make distclean` removes any files reported
# by `git clean -fxd`
make distclean
files=$(git clean -nxd | cut -d" " -f3 | sed "/log/d")
if ! [ -z $files ]
then
echo "The following files weren't cleaned:\n$files"
exit 1
fi
# Syntax: https://docs.gitlab.com/ee/user/project/code_owners.html
* @sgraf812 @bgamari
\ No newline at end of file
......@@ -28,7 +28,7 @@ SUBDIRS = runstdtest nofib-analyse $(NoFibSubDirs)
#
SRC_DIST_DIR=$(shell pwd)/nofib
SRC_DIST_NAME=nofib
SRC_DIST_DIRS=docs fibon gc imaginary smp spectral real parallel mk
SRC_DIST_DIRS=docs fibon gc imaginary smp spectral real parallel mk shootout
dist :: nofib-dist-pre
include $(TOP)/mk/target.mk
......
This is the root directory of the "NoFib Haskell benchmark suite". It
should be part of a GHC source tree, that is the 'nofib' directory
should be at the same level in the tree as 'compiler' and 'libraries'.
To run the tests:
$ make clean
$ make boot
$ make 2>&1 | tee nofib-log
will put the results in the file 'nofib-log'. You can pass extra options to a
nofib run using the EXTRA_HC_OPTS variable like this:
$ make clean
$ make boot
$ make EXTRA_HC_OPTS="-fllvm" >&1 | tee nofib-llvm-log
To compare the results of multiple runs, use the program in
../utils/nofib-analyse. Something like this:
$ nofib-analyse nofib-log-6.4.2 nofib-log-6.6
to generate a comparison of the runs in captured in 'nofib-log-6.4.2'
and 'nofib-log-6.6'. When making comparisons, be careful to ensure
that the things that changed between the builds are only the things
that you *wanted* to change. There are lots of variables: machine,
GHC version, GCC version, C libraries, static vs. dynamic GMP library,
build options, run options, and probably lots more. To be on the safe
side, make both runs on the same unloaded machine.
To get instruction counts, memory reads/writes, and "cache misses",
you'll need to get hold of Cachegrind, which is part of Valgrind
(http://valgrind.org).
There are some options you might want to tweak; search for nofib in
../mk/config.mk, and override settings in ../mk/build.mk as usual.
Package Requirements:
* html
* regex-compat (mtl, regex-base, regex-posix)
* stm (for smp benches)
# NoFib: Haskell Benchmark Suite
This is the root directory of the "NoFib Haskell benchmark suite". It
should be part of a GHC source tree, that is the 'nofib' directory
should be at the same level in the tree as 'compiler' and 'libraries'.
This makes sure that NoFib picks up the stage 2 compiler from the
surrounding GHC source tree.
You can also clone this repository in isolation, in which case it will
pick `$(which ghc)` or whatever the `HC` environment variable is set to.
Additional information can also be found on
[NoFib's wiki page](https://ghc.haskell.org/trac/ghc/wiki/Building/RunningNoFib).
There's also a `easy.sh` helper script, which as name implies, is
automated and easy way to run `nofib`.
See the section at the end of README for its usage.
## Using
<details>
<summary>Git symlink support for Windows machines</summary>
NoFib uses a few symlinks here and there to share code between benchmarks.
Git for Windows has symlinks support for some time now, but
[it may not be enabled by default](https://stackoverflow.com/a/42137273/388010).
You will notice strange `make boot` failures if it's not enabled for you.
Make sure you follow the instructions in the link to enable symlink support,
possibly as simple as through `git config core.symlinks true` or cloning with
`git clone -c core.symlinks=true <URL>`.
</details>
Install [`cabal-install-2.4`](https://www.haskell.org/cabal/download.html) or later.
Then, to run the tests, execute:
```
$ make clean # or git clean -fxd, it's faster
$ # Generates input files for the benchmarks and builds compilation
$ # dependencies for make (ghc -M)
$ make boot
$ # Builds the benchmarks and runs them $NoFibRuns (default: 5) times
$ make
```
This will put the results in the file `nofib-log`. You can pass extra
options to a nofib run using the `EXTRA_HC_OPTS` variable like this:
```
$ make clean
$ make boot
$ make EXTRA_HC_OPTS="-fllvm"
```
**Note:** to get all the results, you have to `clean` and `boot` between
separate `nofib` runs.
To compare the results of multiple runs, save the output in a logfile
and use the program in `./nofib-analyse/nofib-analyse`, for example:
```
...
$ make 2>&1 | tee nofib-log-6.4.2
...
$ make 2>&1 | tee nofib-log-6.6
$ nofib-analyse nofib-log-6.4.2 nofib-log-6.6 | less
```
to generate a comparison of the runs in captured in `nofib-log-6.4.2`
and `nofib-log-6.6`. When making comparisons, be careful to ensure
that the things that changed between the builds are only the things
that you _wanted_ to change. There are lots of variables: machine,
GHC version, GCC version, C libraries, static vs. dynamic GMP library,
build options, run options, and probably lots more. To be on the safe
side, make both runs on the same unloaded machine.
## Modes
Each benchmark is runnable in three different time `mode`s:
- `fast`: 0.1-0.2s
- `norm`: 1-2s
- `slow`: 5-10s
You can control which mode to run by setting an additional `mode` variable for
`make`. The default is `mode=norm`. Example for `mode=fast`:
```
$ make clean
$ make boot mode=fast
$ make mode=fast
```
Note that the `mode`s set in `make boot` and `make` need to agree. Otherwise you
will get output errors, because `make boot` will generate input files for a
different `mode`. A more DRY way to control the `mode` would be
```
$ make clean
$ export mode=fast
$ make boot
$ make
```
As CPU architectures advance, the above running times may drift and
occasionally, all benchmarks will need adjustments.
Be aware that `nofib-analyse` will ignore the result if it falls below 0.2s.
This is the default of its `-i` option, which is of course incompatible with
`mode=fast`. In that case, you should just set `-i` as appropriate, even
deactivate it with `-i 0`.
## Boot vs. benchmarked GHC
The `nofib-analyse` utility is compiled with `BOOT_HC` compiler,
which may be different then the GHC under the benchmark.
You can control which GHC you benchmark with `HC` variable
```
$ make clean
$ make boot HC=ghc-head
$ make HC=ghc-head 2>&1 | tee nofib-log-ghc-head
```
## Configuration
There are some options you might want to tweak; search for nofib in
`../mk/config.mk`, and override settings in `../mk/build.mk` as usual.
## Extra Metrics: Valgrind
To get instruction counts, memory reads/writes, and "cache misses",
you'll need to get hold of Cachegrind, which is part of
[Valgrind](http://valgrind.org).
You can then pass `-cachegrind` as `EXTRA_RUNTEST_OPTS`. Counting
instructions slows down execution by a factor of ~30. But it's
a deterministic metric, so you can combine it with `NoFibRuns=1`:
```
$ (make EXTRA_RUNTEST_OPTS="-cachegrind" NoFibRuns=1) 2>&1 | tee nofib-log
```
Optionally combine this with `mode=fast`, see [Modes](#modes).
## Extra Packages
Some benchmarks aren't run by default and require extra packages are
installed for the GHC compiler being tested. These packages include:
* `old-time`: for `gc` benchmarks
* `stm`: for smp benchmarks
* `parallel`: for parallel benchmarks
* `random`: for various benchmarks
These can be installed with
```
cabal v1-install --allow-newer -w $HC random parallel old-time
````
## Adding benchmarks
If you add a benchmark try to set the problem sizes for
fast/normal/slow reasonably. [Modes](#modes) lists the recommended brackets for
each mode.
### Benchmark Categories
So you have a benchmark to submit but don't know in which subfolder to put it? Here's some
advice on the intended semantics of each category.
#### Single threaded benchmarks
These are run when you just type `make`. Their semantics is explained in
[the Nofib paper](https://link.springer.com/chapter/10.1007%2F978-1-4471-3215-8_17)
(You can find a .ps online, thanks to @bgamari. Alternatively grep for
'Spectral' in docs/paper/paper.verb).
- `imaginary`: Mostly toy benchmarks, solving puzzles like n-queens.
- `spectral`: Algorithmic kernels, like FFT. If you want to add a benchmark of a
library, this most certainly the place to put it.
- `real`: Actual applications, with a command-line interface and all. Because of
the large dependency footprint of today's applications, these have become
rather aged.
- `shootout`: Benchmarks from
[the benchmarks game](https://benchmarksgame-team.pages.debian.net/benchmarksgame/),
formerly known as "language shootout".
Most of the benchmarks are quite old and aren't really written in way one would
write high-performance Haskell code today (e.g., use of `String`, lists,
redefining own list combinators that don't take part in list fusion, rare use of
strictness annotations or unboxed data), so new benchmarks for the `real` and
`spectral` in brackets in particular are always welcome!
#### Other categories
Other than the default single-threaded categories above, there are the
following (SG: I'm guessing here, have never run them):
- `gc`: Run by `make -C gc` (though you'll probably have to edit the Makefile to
your specific config). Select benchmarks from `spectral` and `real`, plus a
few more (Careful, these have not been touched by #15999/!5, see the next
subsection). Testdrives different GC configs, apparently.
- `smp`: Microbenchmarks for the `-threaded` runtime, measuring scheduler
performance on concurrent and STM-heavy code.
### Stability wrt. GC paramerisations
Additionally, pay attention that your benchmarks are stable wrt. different
GC paramerisations, so that small changes in allocation don't lead to big,
unexplicable jumps in performance. See #15999 for details. Also make sure
that you run the benchmark with the default GC settings, as enlarging Gen 0 or
Gen 1 heaps just amplifies the problem.
As a rule of thumb on how to ensure this: Make sure that your benchmark doesn't
just build up one big data and consume it in a final step, but rather that the
working set grows and shrinks (e.g. is approximately constant) over the whole
run of the benchmark. You can ensure this by iterating your main logic `$n`
times (how often depends on your program, but in the ball park of 100-1000).
You can test stability by plotting productivity curves for your `fast` settings
with the `prod.py` script attached to #15999.
If in doubt, ask Sebastian Graf for help.
## Important notes
Note that some of these tests (e.g. `spectral/fish`) tend to be very sensitive
to branch predictor effectiveness. This means that changes in the compiler
can easily be masked by "random" fluctuations in the code layout produced by
particular compiler runs. Recent GHC versions provide the `-fproc-alignment`
flag to pad procedures, ensuring slightly better stability across runs. If you
are seeing an unexpected change in performance try adding `-fproc-alignment=64`
the compiler flags of both your baseline and test tree.
## easy.sh
```
./easy.sh - easy nofib
Usage: ./easy.sh [ -m mode ] /path/to/baseline/ghc /path/to/new/ghc"
GHC paths can point to the root of the GHC repository,
if it's build with Hadrian.
Available options:
-m MODE nofib mode: fast norm slow
This script caches the results using the sha256 of ghc executable.
Remove these files, if you want to rerun the benchmark.
```
......@@ -13,10 +13,24 @@ whereas it didn't before. So allocations go up a bit.
Imaginary suite
---------------------------------------
queens
~~~~~~
The comprehension
gen n = [ (q:b) | b <- gen (n-1), q <- [1..nq], safe q 1 b]
has, for each iteration of 'b', a new list [1..nq]. This can floated
and hence and shared, or fused. It's quite delicate which of the two
happens.
integrate
~~~~~~~~~
integrate1D is strict in its second argument 'u', but it also passes 'u' to
function 'f'. Hence it now does some reboxing, which pushes up allocation
slightly.
gen_regexps
~~~~~~~~~~~
I found that there were some very bad loss-of-arity cases in PrelShow.
I found that there were some very bad loss-of-arity cases in PrelShow.
In particular, we had:
showl "" = showChar '"' s
......@@ -41,7 +55,7 @@ I found that there were some very bad loss-of-arity cases in PrelShow.
So I've changed PrelShow.showLitChar to use explicit \s. Even then, showl
doesn't work, because GHC can't see that showl xs can be pushed inside the \s.
So I've put an explict \s there too.
So I've put an explict \s there too.
showl "" s = showChar '"' s
showl ('"':xs) s = showString "\\\"" (showl xs s)
......@@ -49,6 +63,14 @@ I found that there were some very bad loss-of-arity cases in PrelShow.
Net result: imaginary/gen_regexps more than halves in allocation!
queens
~~~~~~
If we do
a) some inlining before float-out
b) fold/build fusion before float-out
then queens get 40% more allocation. Presumably the fusion
prevents sharing.
x2n1
~~~~
......@@ -68,7 +90,7 @@ It's important to inline p_ident.
There's a very delicate CSE in p_expr
p_expr = seQ q_op [p_term1, p_op, p_term2] ## p_term3
(where all the pterm1,2,3 are really just p_term).
(where all the pterm1,2,3 are really just p_term).
This expands into
p_expr s = case p_term1 s of
......@@ -98,7 +120,7 @@ like this:
xs7_s1i8 :: GHC.Prim.Int# -> [GHC.Base.Char]
[Str: DmdType]
xs7_s1i8 = go_r1og ys_aGO
} in
} in
\ (m_XWf :: GHC.Prim.Int#) ->
case GHC.Prim.<=# m_XWf 1 of wild1_aSI {
GHC.Base.False ->
......@@ -109,20 +131,36 @@ like this:
Notice the 'let' which stops the lambda moving out.
Eliza
eliza
~~~~~
In June 2002, GHC 5.04 emitted four successive
NOTE: Simplifier still going after 4 iterations; bailing out.
messages. I suspect that the simplifer is looping somehow.
messages. I suspect that the simplifier is looping somehow.
fibheaps
~~~~~~~~
If you don't inline getChildren, allocation rises by 25%
hartel/event
~~~~~~~~~~~~
There's a functions called f_nand and f_d, which generates tons of
code if you inline them too vigorously. And this can happen because
of a massive result discount.
Moreover if f_d gets inlined too much, you get lots of local lvl_xx
things which make some closures have lots of free variables, which pushes
up allocation.
Expert
expert
~~~~~~
In spectral/expert/Search.ask there's a statically visible CSE. Catching this
In spectral/expert/Search.ask there's a statically visible CSE. Catching this
depends almost entirely on chance, which is a pity.
reptile
~~~~~~~
Performance dominated by (++) and Show.itos'
Fish
fish
~~~~
The performance of fish depends crucially on inlining scale_vec2.
It turns out to be right on the edge of GHC's normal threshold size, so
......@@ -198,24 +236,51 @@ We would do better to inpline showsPrec9 but it looks too big. Before
it was inlined regardless by the instance-decl stuff. So perf drops slightly.
Integer
integer
~~~~~~~
A good benchmark for beating on big-integer arithmetic
There is a delicate interaction of fusion and full laziness in the comprehension
integerbench :: (Integer -> Integer -> a)
-> Integer -> Integer -> Integer
-> Integer -> Integer -> Integer
-> IO ()
integerbench op astart astep alim bstart bstep blim = do
seqlist ([ a `op` b
| a <- [ astart,astart+astep..alim ]
, b <- [ bstart,astart+bstep..blim ]])
return ()
and the analogous one for Int.
Since the inner loop (for b) doesn't depend on a, we could float the
b-list out; but it may fuse first. In GHC 8 (and most previous
version) this fusion did happen at type Integer, but (accidentally) not for
Int because an interving eval got in the way. So the b-enumeration was floated
out, which led to less allocation of Int values.
Knights
~~~~~~~
In knights/KnightHeuristic, we don't find that possibleMoves is strict
(with important knock-on effects) unless we apply rules before floating
out the literal list [A,B,C...].
Similarly, in f_se (F_Cmp ...) in listcompr (but a smaller effect)
* In knights/KnightHeuristic, we don't find that possibleMoves is strict
(with important knock-on effects) unless we apply rules before floating
out the literal list [A,B,C...].
* Similarly, in f_se (F_Cmp ...) in listcompr (but a smaller effect)
* If we don't inline $wmove, we get an allocation increase of 17%
Lambda
lambda
~~~~~~
This program shows the cost of the non-eta-expanded lambdas that arise from
a state monad.
a state monad.
Mandel
mandel2
~~~~~~~
check_perim's several calls to point_colour lead to opportunities for CSE
which may be more or less well taken.
mandel
~~~~~~
Relies heavily on having a specialised version of Complex.magnitude
(:: Complex Double -> Double) available.
......@@ -226,9 +291,9 @@ this is because the pre-let-floating simplification did too little inlining;
in particular, it did not inline windowToViewport
Multiplier
multiplier
~~~~~~~~~~
In spectral/multiplier, we have
In spectral/multiplier, we have
xor = lift21 forceBit f
where f :: Bit -> Bit -> Bit
f 0 0 = 0
......@@ -240,28 +305,28 @@ In spectral/multiplier, we have
So allocation goes up. I don't see a way around this.
Parstof
~~~~~~~
hartel/partsof
~~~~~~~~~~~~~~
spectral/hartel/parstof ends up saying
case (unpackCString "x") of { c:cs -> ... }
quite a bit. We should spot these and behave accordingly.
Power
power
~~~~~
With GHC 4.08, for some reason the arithmetic defaults to Double. The
right thing is to default to Rational, which accounts for the big increase
in runtime after 4.08
Puzzle
puzzle
~~~~~~
The main function is 'transfer'. It has some complicated join points, and
a big issue is the full laziness can float out many small MFEs that then
a big issue is the full laziness can float out many small MFEs that then
make much bigger closures. It's quite delicate: small changes can make
big differences, and I spent far too long gazing at it.
I found that in my experimental proto 4.09 compiler I had
I found that in my experimental proto 4.09 compiler I had
let ds = go xs in
let $j = .... ds ... in
......@@ -279,11 +344,11 @@ Also, making concat into a good producer made a large gain.
My proto 4.09 still allocates more, partly because of more full laziness relative
to 4.08; I don't know why that happens
Extra allocation is happening in 5.02 as well; perhaps for the same reasons. There is
Extra allocation is happening in 5.02 as well; perhaps for the same reasons. There is
at least one instance of floating that prevents fusion; namely the enumerated lists
in 'transfer'.
Sphere
sphere
~~~~~~
A key function is vecsub, which looks like this (after w/w)
......@@ -304,7 +369,7 @@ $wvecsub
case ww5 of wild1 { D# y ->
let { a3 = -## x y
} in $wD# a3
} }
} }
} in (# a, a1, a2 #)
Currently it gets guidance: IF_ARGS 6 [2 2 2 2 2 2] 25 4
......@@ -336,24 +401,53 @@ Omitting the flag gives much better inlining for $wvecsub at least.
Sphere also does 60,000 calls to hPutStr, so I/O plays a major role. Currently
this I/O does a *lot* of allocation, much of it since the adddition of thread-safety.
this I/O does a *lot* of allocation, much of it since the addition of thread-safety.
Treejoin
treejoin
~~~~~~~~
Does a lot of IO.readFile.
Does a lot of IO.readFile. In GHC.IO.Encoding.UTF8 the demand
analyser sees a strict function with type
a_s1gj :: GHC.IO.Buffer.Buffer GHC.Word.Word8
-> GHC.IO.Buffer.Buffer GHC.Types.Char
-> GHC.Prim.State# GHC.Prim.RealWorld
-> (# GHC.Prim.State# GHC.Prim.RealWorld,
(GHC.IO.Encoding.Types.CodingProgress,
GHC.IO.Buffer.Buffer GHC.Word.Word8,
GHC.IO.Buffer.Buffer GHC.Types.Char) #)
Unboxing both Buffer arguments makes a HUGE difference (halves
allocation); but that makes the worker function have 12 arguments. A
good reason for unboxing even if the worker gets a lot of args.
sorting
~~~~~~~
Same issue with GHC.IO.Encoding.UTF8 as treejoin
---------------------------------------
Real suite
---------------------------------------
gg
~~
Same issue with GHC.IO.Encoding.UTF8 as treejoin
Maillist
~~~~~~~~
Uses appendFile repeatedly rather than opening the output file once,
which leads to numerous file opens/closes. Allocations will rise with
the new I/O subsystem in 5.02 because the I/O buffer will be
re-allocated on the heap for each open, whereas previously it would be
allocated on the C heap and therefore not show up in the stats.
---------------------------------------
Shootout suite
---------------------------------------
binary-tree
~~~~~~~~~~~
In May 2016, a series of seemingly unrelated commits changed the runtime
performance of this up and down by ~3%. Maybe a performance cliff. Mailinglist
thread:
https://mail.haskell.org/pipermail/ghc-devs/2017-March/013886.html
{-# LANGUAGE CPP #-}
module NofibUtils where
import Data.Char (ord)
import Data.List (foldl')
import System.Environment (getArgs)
-- | A very simple hash function so that we don't have to store and compare
-- huge output files.
hash :: String -> Int
hash = foldl' (\acc c -> ord c + acc*31) 0
-- | Using @salt xs@ on an loop-invariant @xs@ inside a loop prevents the
-- compiler from floating out the input parameter.
#ifdef __GLASGOW_HASKELL__
salt :: a -> IO a
salt = pure
{-# NOINLINE salt #-}
#else
salt :: [a] -> IO [a]
-- this won't work with real/lift, but I can't think of another way
salt xs = do
s <- length <$> getArgs
-- Invariant: There are less than 'maxBound' parameters passed to the
-- executable, otherwise this isn't really 'pure'
-- anymore.
pure (take (max (maxBound - 1) s) xs)
#endif
\ No newline at end of file
#!/bin/sh
echo '\033]0;NOFIB: starting...\007'
# Settings
#######################################################################
mode=norm
# "Library" part
#######################################################################
show_usage () {
cat <<EOF
./easy.sh - easy nofib
Usage: ./easy.sh [ -m mode ] /path/to/baseline/ghc /path/to/new/ghc"
GHC paths can point to the root of the GHC repository,
if it's build with Hadrian.
Available options:
-m MODE nofib mode: fast norm slow
This script caches the results using the sha256 of ghc executable.
Remove these files, if you want to rerun the benchmark.
EOF
}
hashoffile () {
shasum -a 256 $1 | awk '{ print $1 }'
}
# getopt
#######################################################################
while getopts 'm:' flag; do
case $flag in
m)
case $OPTARG in
slow)
mode=$OPTARG
;;
norm)
mode=$OPTARG
;;
fast)
mode=$OPTARG
;;
*)
echo "Unknown mode: $OPTARG"
show_usage
exit 1
;;
esac
;;
?) show_usage
;;
esac
done
shift $((OPTIND - 1))
if [ $# -ne 2 ]; then
echo "Expected two arguments: ghc executables or roots of source repositories"
show_usage
exit 1
fi
OLD_HC=$1
NEW_HC=$2
# Set up
#######################################################################
# Arguments can point to GHC repository roots
if [ -d $OLD_HC -a -f "$OLD_HC/_build/stage1/bin/ghc" ]; then
OLD_HC="$OLD_HC/_build/stage1/bin/ghc"
fi
if [ -d $NEW_HC -a -f "$NEW_HC/_build/stage1/bin/ghc" ]; then
NEW_HC="$NEW_HC/_build/stage1/bin/ghc"
fi
# Check we have executables
if [ ! -f $NEW_HC -a -x $OLD_HC ]; then
echo "$OLD_HC is not an executable"
exit 1
fi
if [ ! -f $NEW_HC -a -x $NEW_HC ]; then
echo "$NEW_HC is not an executable"
exit 1
fi
# Info before we get going
#######################################################################
echo "Running nofib (mode=$mode) with $OLD_HC and $NEW_HC"
echo "Running nofib (mode=$mode) with $OLD_HC and $NEW_HC" | sed 's/./-/g'
sleep 2
# Run nofib
#######################################################################
# Run with old ghc
echo '\033]0;NOFIB: old\007'
OLD_HASH=$(hashoffile $OLD_HC)
OLD_OUTPUT=result-$OLD_HASH-$mode.txt
if [ -f $OLD_OUTPUT ]; then
echo "$OLD_OUTPUT exists; not re-running."
else
echo '\033]0;NOFIB: old, cleaning...\007'
make clean
echo '\033]0;NOFIB: old, booting...\007'
make boot mode=$mode HC=$OLD_HC
echo '\033]0;NOFIB: old, benchmarking...\007'
make mode=$mode HC=$OLD_HC 2>&1 | tee $OLD_OUTPUT
fi
# Run with new ghc
echo '\033]0;NOFIB: new\007'
NEW_HASH=$(hashoffile $NEW_HC)
NEW_OUTPUT=result-$NEW_HASH-$mode.txt
if [ -f $NEW_OUTPUT ]; then
echo "$NEW_OUTPUT exists; not re-running."
else
echo '\033]0;NOFIB: new, cleaning...\007'
make clean
echo '\033]0;NOFIB: new, booting...\007'
make boot mode=$mode HC=$NEW_HC
echo '\033]0;NOFIB: new, benchmarking...\007'
make mode=$mode HC=$NEW_HC 2>&1 | tee $NEW_OUTPUT
fi
# Done
#######################################################################
echo '\033]0;NOFIB: done\007'
# Analyse
./nofib-analyse/nofib-analyse $OLD_OUTPUT $NEW_OUTPUT > report.txt
# Show report
less report.txt
This source diff could not be displayed because it is too large. You can view the blob instead.
2010-06-21 John D. Ramsdell <ramsdell@mitre.org>
* agum.cabal (Version): Released as version 2.3.
* agum.cabal (Build-Depends): changes dependency to
base >= 3 && <5, containers
2009-09-17 John D. Ramsdell <ramsdell@mitre.org>
* agum.cabal (Version): Released as version 2.2.
2009-09-14 John D. Ramsdell <ramsdell@.mitre.org>
* src/Algebra/AbelianGroup/IntLinEq.hs: Integer solutions to
linear equation solver was placed in its own module.
2009-09-13 John D. Ramsdell <ramsdell@mitre.org>
* src/Algebra/AbelianGroup/UnificationMatching.hs (unify): Changed
the result to be a substitution since unification always succeeds.
2009-09-05 John D. Ramsdell <ramsdell@mitre.org>
* src/Algebra/AbelianGroup/UnificationMatching.hs: Added
reference to Andrew Kennedy's Ph.D. thesis as it contains a proof
of correctness of the implemented matching algorithm.
* agum.cabal (Version): Released as version 2.1.
2009-08-29 John D. Ramsdell <ramsdell@mitre.org>
* src/Algebra/AbelianGroup/UnificationMatching.hs (Substitution,
apply): Hid the representation of a substitution and supplied a
function for applying a substitution to a term.
* agum.cabal (Version): Released as version 2.0.
TOP = ../../..
include $(TOP)/mk/boilerplate.mk
SRCS = src/Algebra/AbelianGroup/IntLinEq.hs \
src/Algebra/AbelianGroup/UnificationMatching.hs \
src/Algebra/AbelianGroup/Main.hs
STDIN_FILE = eqn.txt
HC_OPTS += -isrc -package base -package containers
include $(TOP)/mk/target.mk
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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The GNU General Public License is a free, copyleft license for
software and other kinds of works.
The licenses for most software and other practical works are designed
to take away your freedom to share and change the works. By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors. You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
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Developers that use the GNU GPL protect your rights with two steps:
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TERMS AND CONDITIONS
0. Definitions.
"This License" refers to version 3 of the GNU General Public License.
"Copyright" also means copyright-like laws that apply to other kinds of
works, such as semiconductor masks.
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A "covered work" means either the unmodified Program or a work based
on the Program.
To "propagate" a work means to do anything with it that, without
permission, would make you directly or secondarily liable for
infringement under applicable copyright law, except executing it on a
computer or modifying a private copy. Propagation includes copying,
distribution (with or without modification), making available to the
public, and in some countries other activities as well.
To "convey" a work means any kind of propagation that enables other
parties to make or receive copies. Mere interaction with a user through
a computer network, with no transfer of a copy, is not conveying.
An interactive user interface displays "Appropriate Legal Notices"
to the extent that it includes a convenient and prominently visible
feature that (1) displays an appropriate copyright notice, and (2)
tells the user that there is no warranty for the work (except to the
extent that warranties are provided), that licensees may convey the
work under this License, and how to view a copy of this License. If
the interface presents a list of user commands or options, such as a
menu, a prominent item in the list meets this criterion.
1. Source Code.
The "source code" for a work means the preferred form of the work
for making modifications to it. "Object code" means any non-source
form of a work.
A "Standard Interface" means an interface that either is an official
standard defined by a recognized standards body, or, in the case of
interfaces specified for a particular programming language, one that
is widely used among developers working in that language.
The "System Libraries" of an executable work include anything, other
than the work as a whole, that (a) is included in the normal form of
packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that
Major Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form. A
"Major Component", in this context, means a major essential component
(kernel, window system, and so on) of the specific operating system
(if any) on which the executable work runs, or a compiler used to
produce the work, or an object code interpreter used to run it.
The "Corresponding Source" for a work in object code form means all
the source code needed to generate, install, and (for an executable
work) run the object code and to modify the work, including scripts to
control those activities. However, it does not include the work's
System Libraries, or general-purpose tools or generally available free
programs which are used unmodified in performing those activities but
which are not part of the work. For example, Corresponding Source
includes interface definition files associated with source files for
the work, and the source code for shared libraries and dynamically
linked subprograms that the work is specifically designed to require,
such as by intimate data communication or control flow between those
subprograms and other parts of the work.
The Corresponding Source need not include anything that users
can regenerate automatically from other parts of the Corresponding
Source.
The Corresponding Source for a work in source code form is that
same work.
2. Basic Permissions.
All rights granted under this License are granted for the term of
copyright on the Program, and are irrevocable provided the stated
conditions are met. This License explicitly affirms your unlimited
permission to run the unmodified Program. The output from running a
covered work is covered by this License only if the output, given its
content, constitutes a covered work. This License acknowledges your
rights of fair use or other equivalent, as provided by copyright law.
You may make, run and propagate covered works that you do not
convey, without conditions so long as your license otherwise remains
in force. You may convey covered works to others for the sole purpose
of having them make modifications exclusively for you, or provide you
with facilities for running those works, provided that you comply with
the terms of this License in conveying all material for which you do
not control copyright. Those thus making or running the covered works
for you must do so exclusively on your behalf, under your direction
and control, on terms that prohibit them from making any copies of
your copyrighted material outside their relationship with you.
Conveying under any other circumstances is permitted solely under
the conditions stated below. Sublicensing is not allowed; section 10
makes it unnecessary.
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
No covered work shall be deemed part of an effective technological
measure under any applicable law fulfilling obligations under article
11 of the WIPO copyright treaty adopted on 20 December 1996, or
similar laws prohibiting or restricting circumvention of such
measures.
When you convey a covered work, you waive any legal power to forbid
circumvention of technological measures to the extent such circumvention
is effected by exercising rights under this License with respect to
the covered work, and you disclaim any intention to limit operation or
modification of the work as a means of enforcing, against the work's
users, your or third parties' legal rights to forbid circumvention of
technological measures.
4. Conveying Verbatim Copies.
You may convey verbatim copies of the Program's source code as you
receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice;
keep intact all notices stating that this License and any
non-permissive terms added in accord with section 7 apply to the code;
keep intact all notices of the absence of any warranty; and give all
recipients a copy of this License along with the Program.
You may charge any price or no price for each copy that you convey,
and you may offer support or warranty protection for a fee.
5. Conveying Modified Source Versions.
You may convey a work based on the Program, or the modifications to
produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:
a) The work must carry prominent notices stating that you modified
it, and giving a relevant date.
b) The work must carry prominent notices stating that it is
released under this License and any conditions added under section
7. This requirement modifies the requirement in section 4 to
"keep intact all notices".
c) You must license the entire work, as a whole, under this
License to anyone who comes into possession of a copy. This
License will therefore apply, along with any applicable section 7
additional terms, to the whole of the work, and all its parts,
regardless of how they are packaged. This License gives no
permission to license the work in any other way, but it does not
invalidate such permission if you have separately received it.
d) If the work has interactive user interfaces, each must display
Appropriate Legal Notices; however, if the Program has interactive
interfaces that do not display Appropriate Legal Notices, your
work need not make them do so.
A compilation of a covered work with other separate and independent
works, which are not by their nature extensions of the covered work,
and which are not combined with it such as to form a larger program,
in or on a volume of a storage or distribution medium, is called an
"aggregate" if the compilation and its resulting copyright are not
used to limit the access or legal rights of the compilation's users
beyond what the individual works permit. Inclusion of a covered work
in an aggregate does not cause this License to apply to the other
parts of the aggregate.
6. Conveying Non-Source Forms.
You may convey a covered work in object code form under the terms
of sections 4 and 5, provided that you also convey the
machine-readable Corresponding Source under the terms of this License,
in one of these ways:
a) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by the
Corresponding Source fixed on a durable physical medium
customarily used for software interchange.
b) Convey the object code in, or embodied in, a physical product
(including a physical distribution medium), accompanied by a
written offer, valid for at least three years and valid for as
long as you offer spare parts or customer support for that product
model, to give anyone who possesses the object code either (1) a
copy of the Corresponding Source for all the software in the
product that is covered by this License, on a durable physical
medium customarily used for software interchange, for a price no
more than your reasonable cost of physically performing this
conveying of source, or (2) access to copy the
Corresponding Source from a network server at no charge.
c) Convey individual copies of the object code with a copy of the
written offer to provide the Corresponding Source. This
alternative is allowed only occasionally and noncommercially, and
only if you received the object code with such an offer, in accord
with subsection 6b.
d) Convey the object code by offering access from a designated
place (gratis or for a charge), and offer equivalent access to the
Corresponding Source in the same way through the same place at no
further charge. You need not require recipients to copy the
Corresponding Source along with the object code. If the place to
copy the object code is a network server, the Corresponding Source
may be on a different server (operated by you or a third party)
that supports equivalent copying facilities, provided you maintain
clear directions next to the object code saying where to find the
Corresponding Source. Regardless of what server hosts the
Corresponding Source, you remain obligated to ensure that it is
available for as long as needed to satisfy these requirements.
e) Convey the object code using peer-to-peer transmission, provided
you inform other peers where the object code and Corresponding
Source of the work are being offered to the general public at no
charge under subsection 6d.
A separable portion of the object code, whose source code is excluded
from the Corresponding Source as a System Library, need not be
included in conveying the object code work.
A "User Product" is either (1) a "consumer product", which means any
tangible personal property which is normally used for personal, family,
or household purposes, or (2) anything designed or sold for incorporation
into a dwelling. In determining whether a product is a consumer product,
doubtful cases shall be resolved in favor of coverage. For a particular
product received by a particular user, "normally used" refers to a
typical or common use of that class of product, regardless of the status
of the particular user or of the way in which the particular user
actually uses, or expects or is expected to use, the product. A product
is a consumer product regardless of whether the product has substantial
commercial, industrial or non-consumer uses, unless such uses represent
the only significant mode of use of the product.
"Installation Information" for a User Product means any methods,
procedures, authorization keys, or other information required to install
and execute modified versions of a covered work in that User Product from
a modified version of its Corresponding Source. The information must
suffice to ensure that the continued functioning of the modified object
code is in no case prevented or interfered with solely because
modification has been made.
If you convey an object code work under this section in, or with, or
specifically for use in, a User Product, and the conveying occurs as
part of a transaction in which the right of possession and use of the
User Product is transferred to the recipient in perpetuity or for a
fixed term (regardless of how the transaction is characterized), the
Corresponding Source conveyed under this section must be accompanied
by the Installation Information. But this requirement does not apply
if neither you nor any third party retains the ability to install
modified object code on the User Product (for example, the work has
been installed in ROM).
The requirement to provide Installation Information does not include a
requirement to continue to provide support service, warranty, or updates
for a work that has been modified or installed by the recipient, or for
the User Product in which it has been modified or installed. Access to a
network may be denied when the modification itself materially and
adversely affects the operation of the network or violates the rules and
protocols for communication across the network.
Corresponding Source conveyed, and Installation Information provided,
in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.
7. Additional Terms.
"Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.
Additional permissions that are applicable to the entire Program shall
be treated as though they were included in this License, to the extent
that they are valid under applicable law. If additional permissions
apply only to part of the Program, that part may be used separately
under those permissions, but the entire Program remains governed by
this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option
remove any additional permissions from that copy, or from any part of
it. (Additional permissions may be written to require their own
removal in certain cases when you modify the work.) You may place
additional permissions on material, added by you to a covered work,
for which you have or can give appropriate copyright permission.
Notwithstanding any other provision of this License, for material you
add to a covered work, you may (if authorized by the copyright holders of
that material) supplement the terms of this License with terms:
a) Disclaiming warranty or limiting liability differently from the
terms of sections 15 and 16 of this License; or
b) Requiring preservation of specified reasonable legal notices or
author attributions in that material or in the Appropriate Legal
Notices displayed by works containing it; or