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# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
from spack import *
class GpuBurn(MakefilePackage, CudaPackage):
"""Multi-GPU CUDA stress test. Note that the file pointed to by COMPARE_PTX
needs to be copied or linked to the current working directory before
running gpu_burn."""
homepage = "http://wili.cc/blog/gpu-burn.html"
url = "http://wili.cc/blog/entries/gpu-burn/gpu_burn-1.0.tar.gz"
version('1.0', sha256='d55994f0bee8dabf021966dbe574ef52be1e43386faeee91318dd4ebb36aa74a')
patch('Makefile.patch')
# This package uses CudaPackage to pick up the cuda_arch variant. A side
# effect is that it also picks up the cuda variant, but cuda is required
# for gpu-burn so is not really a variant.
variant('cuda', 'True', description='Use CUDA; must be true')
conflicts('~cuda', msg='gpu-burn requires cuda')
def edit(self, spec, prefix):
# update cuda architecture if necessary
if '+cuda' in self.spec:
cuda_arch = self.spec.variants['cuda_arch'].value
archflag = ''
if cuda_arch != 'none':
if len(cuda_arch) > 1:
raise InstallError(
'gpu-burn only supports compilation for a single GPU'
'type.'
)
archflag = '-arch=compute_{0}'.format(cuda_arch[0])
filter_file('-arch=compute_30', archflag,
'Makefile', string=True)
def install(self, spec, prefix):
mkdir(prefix.bin)
mkdir(prefix.share)
install('gpu_burn', prefix.bin)
install('compare.ptx', prefix.share)
# The gpu_burn program looks for the compare.ptx file in the current
# working directory. Create an environment variable that can be pointed to
# so that it can be copied or linked.
def setup_run_environment(self, env):
env.set('COMPARE_PTX', join_path(self.prefix.share, 'compare.ptx'))
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