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Diffstat (limited to 'src/pyclblast/samples/sgemv.py')
-rw-r--r-- | src/pyclblast/samples/sgemv.py | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/pyclblast/samples/sgemv.py b/src/pyclblast/samples/sgemv.py new file mode 100644 index 00000000..196c838d --- /dev/null +++ b/src/pyclblast/samples/sgemv.py @@ -0,0 +1,40 @@ +#!/usr/bin/env python + +# This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. +# This file follows the PEP8 Python style guide and uses a max-width of 100 characters per line. +# +# Author(s): +# Cedric Nugteren <www.cedricnugteren.nl> + +import numpy as np +import pyopencl as cl +from pyopencl.array import Array +import pyclblast + +# Settings for this sample +dtype = 'float32' +m, n = 4, 3 +alpha = 1.0 +beta = 0.0 + +print("# Setting up OpenCL") +ctx = cl.create_some_context() +queue = cl.CommandQueue(ctx) + +print("# Setting up Numpy arrays") +a = np.random.rand(m, n).astype(dtype=dtype) +x = np.random.rand(n).astype(dtype=dtype) +y = np.random.rand(m).astype(dtype=dtype) + +print("# Setting up OpenCL arrays") +cla = Array(queue, a.shape, a.dtype) +clx = Array(queue, x.shape, x.dtype) +cly = Array(queue, y.shape, y.dtype) +cla.set(a) +clx.set(x) +cly.set(y) + +print("# Example level-2 operation: GEMV") +pyclblast.gemv(queue, m, n, cla, clx, cly, a_ld=n, alpha=alpha, beta=beta) +print("# Result for vector y: %s" % cly.get()) +print("# Expected result: %s" % (alpha * np.dot(a, x) + beta * y)) |