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openblas: a small unit test to make sure Lapack symbols are compiled

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This commit is contained in:
Denis Davydov 2016-04-25 09:57:48 +02:00
parent 5c4bb69af9
commit b81cb554f5
1 changed files with 55 additions and 0 deletions
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55
var/spack/repos/builtin/packages/openblas/package.py
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@ -1,6 +1,7 @@
from spack import *
import sys
import os
import shutil
class Openblas(Package):
"""OpenBLAS: An optimized BLAS library"""
@ -64,6 +65,10 @@ def install(self, spec, prefix):
if '+shared' in spec:
symlink('libopenblas.%s' % dso_suffix, 'liblapack.%s' % dso_suffix)
# Openblas may pass its own test but still fail to compile Lapack
# symbols. To make sure we get working Blas and Lapack, do a small test.
self.check_install(spec)
def setup_dependent_package(self, module, dspec):
# This is WIP for a prototype interface for virtual packages.
@ -76,3 +81,53 @@ def setup_dependent_package(self, module, dspec):
if '+shared' in self.spec:
self.spec.blas_shared_lib = join_path(libdir, 'libopenblas.%s' % dso_suffix)
self.spec.lapack_shared_lib = self.spec.blas_shared_lib
def check_install(self, spec):
"Build and run a small program to test that we have Lapack symbols"
print "Checking Openblas installation..."
checkdir = "spack-check"
with working_dir(checkdir, create=True):
source = r"""
#include <cblas.h>
#include <stdio.h>
int main(void) {
int i=0;
double A[6] = {1.0, 2.0, 1.0, -3.0, 4.0, -1.0};
double B[6] = {1.0, 2.0, 1.0, -3.0, 4.0, -1.0};
double C[9] = {.5, .5, .5, .5, .5, .5, .5, .5, .5};
cblas_dgemm(CblasColMajor, CblasNoTrans, CblasTrans,
3, 3, 2, 1, A, 3, B, 3, 2, C, 3);
for (i = 0; i < 8; i++)
printf("%lf ", C[i]);
printf("%lf", C[8]);
return 0;
}
"""
expected = """\
11.000000 -9.000000 5.000000 -9.000000 21.000000 -1.000000 5.000000 -1.000000 3.000000\
"""
with open("check.c", 'w') as f:
f.write(source)
cc = which('cc')
# TODO: Automate these path and library settings
cc('-c', "-I%s" % join_path(spec.prefix, "include"), "check.c")
cc('-o', "check", "check.o",
"-L%s" % join_path(spec.prefix, "lib"), "-llapack", "-lblas")
try:
check = Executable('./check')
output = check(return_output=True)
except:
output = ""
success = output == expected
if not success:
print "Produced output does not match expected output."
print "Expected output:"
print '-'*80
print expected
print '-'*80
print "Produced output:"
print '-'*80
print output
print '-'*80
raise RuntimeError("Openblas install check failed")
shutil.rmtree(checkdir)