82 lines
2.7 KiB
Python
82 lines
2.7 KiB
Python
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import os
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import sys
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import subprocess
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import threading
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from numba import cuda
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from numba.cuda.testing import (unittest, CUDATestCase, skip_on_cudasim,
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skip_under_cuda_memcheck)
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from numba.tests.support import captured_stdout
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class TestCudaDetect(CUDATestCase):
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def test_cuda_detect(self):
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# exercise the code path
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with captured_stdout() as out:
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cuda.detect()
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output = out.getvalue()
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self.assertIn('Found', output)
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self.assertIn('CUDA devices', output)
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@skip_under_cuda_memcheck('Hangs cuda-memcheck')
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class TestCUDAFindLibs(CUDATestCase):
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def run_cmd(self, cmdline, env):
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popen = subprocess.Popen(cmdline,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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env=env)
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# finish in 5 minutes or kill it
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timeout = threading.Timer(5 * 60., popen.kill)
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try:
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timeout.start()
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out, err = popen.communicate()
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# the process should exit with an error
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return out.decode(), err.decode()
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finally:
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timeout.cancel()
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return None, None
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def run_test_in_separate_process(self, envvar, envvar_value):
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env_copy = os.environ.copy()
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env_copy[envvar] = str(envvar_value)
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code = """if 1:
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from numba import cuda
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@cuda.jit('(int64,)')
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def kernel(x):
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pass
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kernel(1,)
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"""
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cmdline = [sys.executable, "-c", code]
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return self.run_cmd(cmdline, env_copy)
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@skip_on_cudasim('Simulator does not hit device library search code path')
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@unittest.skipIf(not sys.platform.startswith('linux'), "linux only")
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def test_cuda_find_lib_errors(self):
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"""
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This tests that the find_libs works as expected in the case of an
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environment variable being used to set the path.
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"""
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# one of these is likely to exist on linux, it's also unlikely that
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# someone has extracted the contents of libdevice into here!
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locs = ['lib', 'lib64']
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looking_for = None
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for l in locs:
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looking_for = os.path.join(os.path.sep, l)
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if os.path.exists(looking_for):
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break
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# This is the testing part, the test will only run if there's a valid
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# path in which to look
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if looking_for is not None:
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out, err = self.run_test_in_separate_process("NUMBA_CUDA_DRIVER",
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looking_for)
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self.assertTrue(out is not None)
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self.assertTrue(err is not None)
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if __name__ == '__main__':
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unittest.main()
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