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from itertools import product
import numpy
import pytest
import platform
import sys
from pygpu.gpuarray import GpuArrayException
from .support import (guard_devsup, gen_gpuarray, context)
try:
import scipy.linalg.blas
try:
fblas = scipy.linalg.blas.fblas
except AttributeError:
fblas = scipy.linalg.blas
except ImportError as e:
pytest.skip("no scipy blas to compare against",allow_module_level=True)
import pygpu.blas as gblas
from pygpu.gpuarray import (GpuArrayException, UnsupportedException)
def guard_devsup_blasdouble(func):
def f(*args, **kwargs):
try:
func(*args, **kwargs)
except UnsupportedException as e:
pytest.skip("operation not supported")
except GpuArrayException as e:
if 'float64' in args and "does not support double precision" in str(e):
pytest.skip("double precision not supported")
raise
return f
def require_double_support(msg='clblas gemm - https://bugs.debian.org/877316'):
try:
a = gen_gpuarray((3,), 'float64', sliced=2, ctx=context)
except UnsupportedException:
pytest.skip('double precision not supported, and is required for ' + msg)
def test_dot():
bools = [True, False]
for N, dtype, offseted_i, sliced in product(
[1, 256, 1337], ['float32', 'float64'], bools, bools):
dot(N, dtype, offseted_i, sliced, True, False)
for overwrite, init_z in product(bools, bools):
dot(666, 'float32', False, False, overwrite, init_z)
@guard_devsup_blasdouble
def dot(N, dtype, offseted_i, sliced, overwrite, init_z):
cX, gX = gen_gpuarray((N,), dtype, offseted_inner=offseted_i,
sliced=sliced, ctx=context)
cY, gY = gen_gpuarray((N,), dtype, offseted_inner=offseted_i,
sliced=sliced, ctx=context)
if init_z:
gZ = gen_gpuarray((), dtype, offseted_inner=offseted_i,
sliced=sliced, ctx=context)[1]
else:
gZ = None
cr = fblas.ddot(cX, cY)
gr = gblas.dot(gX, gY, gZ, overwrite_z=overwrite)
numpy.testing.assert_allclose(cr, numpy.asarray(gr), rtol=1e-6)
def test_gemv():
bools = [False, True]
for shape, order, trans, offseted_i, sliced in product(
[(100, 128), (128, 50)], 'fc', bools, bools, [1, 2, -1, -2]):
gemv(shape, 'float32', order, trans,
offseted_i, sliced, True, False)
for overwrite, init_y in product(bools, bools):
gemv((4, 3), 'float32', 'f', False, False, 1,
overwrite, init_y)
gemv((32, 32), 'float64', 'f', False, False, 1, True, False)
for alpha, beta, overwrite in product(
[0, 1, -1, 0.6], [0, 1, -1, 0.6], bools):
gemv((32, 32), 'float32', 'f', False, False, 1,
overwrite, True, alpha, beta)
@guard_devsup_blasdouble
def gemv(shp, dtype, order, trans, offseted_i, sliced,
overwrite, init_y, alpha=1.0, beta=0.0):
cA, gA = gen_gpuarray(shp, dtype, order=order, offseted_inner=offseted_i,
sliced=sliced, ctx=context)
if trans:
shpX = (shp[0],)
shpY = (shp[1],)
else:
shpX = (shp[1],)
shpY = (shp[0],)
cX, gX = gen_gpuarray(shpX, dtype, offseted_inner=offseted_i,
sliced=sliced, ctx=context)
if init_y:
cY, gY = gen_gpuarray(shpY, dtype, ctx=context)
else:
cY, gY = None, None
if dtype == 'float32':
cr = fblas.sgemv(alpha, cA, cX, beta, cY, trans=trans,
overwrite_y=overwrite)
else:
cr = fblas.dgemv(alpha, cA, cX, beta, cY, trans=trans,
overwrite_y=overwrite)
try:
gr = gblas.gemv(alpha, gA, gX, beta, gY, trans_a=trans,
overwrite_y=overwrite)
except GpuArrayException:
if platform.uname()[4].startswith('aarch') and sys.maxsize>2**33:
pytest.skip("known to crash on arm64, https://bugs.debian.org/992673")
raise
numpy.testing.assert_allclose(cr, numpy.asarray(gr), rtol=1e-6)
def test_gemm():
bools = [False, True]
for (m, n, k), order, trans, offseted_o in product(
[(48, 15, 32), (15, 32, 48)], list(product(*['fc']*3)),
list(product(bools, bools)), bools):
gemm(m, n, k, 'float32', order, trans,
offseted_o, 1, False, False)
for sliced, overwrite, init_res in product([1, 2, -1, -2], bools, bools):
gemm(4, 3, 2, 'float32', ('f', 'f', 'f'),
(False, False), False, sliced, overwrite, init_res)
gemm(32, 32, 32, 'float64', ('f', 'f', 'f'), (False, False),
False, 1, False, False)
for alpha, beta, overwrite in product(
[0, 1, -1, 0.6], [0, 1, -1, 0.6], bools):
gemm(32, 23, 32, 'float32', ('f', 'f', 'f'),
(False, False), False, 1, overwrite, True, alpha, beta)
@guard_devsup_blasdouble
def gemm(m, n, k, dtype, order, trans, offseted_o, sliced, overwrite,
init_res, alpha=1.0, beta=0.0):
require_double_support()
if trans[0]:
shpA = (k, m)
else:
shpA = (m, k)
if trans[1]:
shpB = (n, k)
else:
shpB = (k, n)
cA, gA = gen_gpuarray(shpA, dtype, order=order[0],
offseted_outer=offseted_o,
sliced=sliced, ctx=context)
cB, gB = gen_gpuarray(shpB, dtype, order=order[1],
offseted_outer=offseted_o,
sliced=sliced, ctx=context)
if init_res:
cC, gC = gen_gpuarray((m, n), dtype, order=order[2], ctx=context)
else:
cC, gC = None, None
if dtype == 'float32':
cr = fblas.sgemm(alpha, cA, cB, beta, cC, trans_a=trans[0],
trans_b=trans[1], overwrite_c=overwrite)
else:
cr = fblas.dgemm(alpha, cA, cB, beta, cC, trans_a=trans[0],
trans_b=trans[1], overwrite_c=overwrite)
gr = gblas.gemm(alpha, gA, gB, beta, gC, trans_a=trans[0],
trans_b=trans[1], overwrite_c=overwrite)
numpy.testing.assert_allclose(cr, numpy.asarray(gr), rtol=1e-6)
def test_ger():
bools = [False, True]
for (m, n), order, sliced_x, sliced_y in product(
[(64, 64)], 'fc', [1, 2, -2, -1], [1, 2, -2, -1]):
ger(m, n, 'float32', order, sliced_x, sliced_y, False)
ger(64, 64, 'float64', 'f', 1, 1, False)
for init_res, overwrite in product(bools, bools):
ger(64, 64, 'float32', 'f', 1, 1, init_res, overwrite)
@guard_devsup_blasdouble
def ger(m, n, dtype, order, sliced_x, sliced_y, init_res, overwrite=False):
cX, gX = gen_gpuarray((m,), dtype, order, sliced=sliced_x, ctx=context)
cY, gY = gen_gpuarray((n,), dtype, order, sliced=sliced_y, ctx=context)
if init_res:
cA, gA = gen_gpuarray((m, n), dtype, order, ctx=context)
else:
cA, gA = None, None
if dtype == 'float32':
cr = fblas.sger(1.0, cX, cY, a=cA, overwrite_a=overwrite)
else:
cr = fblas.dger(1.0, cX, cY, a=cA, overwrite_a=overwrite)
try:
gr = gblas.ger(1.0, gX, gY, gA, overwrite_a=overwrite)
except GpuArrayException:
if platform.uname()[4].startswith('aarch') and sys.maxsize>2**33:
pytest.skip("known to crash on arm64, https://bugs.debian.org/992673")
raise
numpy.testing.assert_allclose(cr, numpy.asarray(gr), rtol=1e-6)
def test_rgemmBatch_3d():
bools = [False, True]
for b, (m, n, k), order, trans, offseted_o in product(
[1, 17, 31], [(24, 7, 16), (7, 16, 24)],
list(product('fc', 'fc', 'c')),
list(product(bools, bools)), bools):
rgemmBatch_3d(b, m, n, k, 'float32', order, trans,
offseted_o, 1, False, False)
for sliced, overwrite, init_res in product([1, 2, -1, -2], bools, bools):
rgemmBatch_3d(5, 4, 3, 2, 'float32', ('f', 'f', 'c'),
(False, False), False, sliced, overwrite, init_res)
rgemmBatch_3d(16, 16, 16, 16, 'float64', ('f', 'f', 'c'),
(False, False), False, 1, False, False)
for alpha, beta, overwrite in product(
[0, 1, -1, 0.6], [0, 1, -1, 0.6], bools):
rgemmBatch_3d(16, 16, 9, 16, 'float32', ('f', 'f', 'c'),
(False, False), False, 1, overwrite, True, alpha, beta)
@guard_devsup_blasdouble
def rgemmBatch_3d(b, m, n, k, dtype, order, trans, offseted_o, sliced,
overwrite, init_res, alpha=1.0, beta=0.0):
require_double_support()
if trans[0]:
shpA = (b, k, m)
else:
shpA = (b, m, k)
if trans[1]:
shpB = (b, n, k)
else:
shpB = (b, k, n)
cA, gA = gen_gpuarray(shpA, dtype, order=order[0],
offseted_outer=offseted_o,
sliced=sliced, ctx=context)
cB, gB = gen_gpuarray(shpB, dtype, order=order[1],
offseted_outer=offseted_o,
sliced=sliced, ctx=context)
if init_res:
cC, gC = gen_gpuarray((b, m, n), dtype, order=order[2], ctx=context)
else:
cC, gC = None, None
cr = numpy.empty((b, m, n), dtype=dtype)
if dtype == 'float32':
fn_gemm_c = fblas.sgemm
else:
fn_gemm_c = fblas.dgemm
for i in range(b):
cCi = cC if cC is None else cC[i]
cr[i] = fn_gemm_c(alpha, cA[i], cB[i], beta, cCi, trans_a=trans[0],
trans_b=trans[1], overwrite_c=overwrite)
gr = gblas.gemmBatch_3d(alpha, gA, gB, beta, gC, trans_a=trans[0],
trans_b=trans[1], overwrite_c=overwrite)
numpy.testing.assert_allclose(cr, numpy.asarray(gr), rtol=1e-5)
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