70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
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// =================================================================================================
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// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
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// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
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// width of 100 characters per line.
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//
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// Author(s):
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// Cedric Nugteren <www.cedricnugteren.nl>
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//
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// This file demonstrates the use of the Netlib CBLAS API of the CLBlast library. This API is not
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// recommended if you want full control over performance: it will internally copy buffers from and
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// to the OpenCL device.
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//
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// Note that this example is meant for illustration purposes only. CLBlast provides other programs
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// for performance benchmarking ('client_xxxxx') and for correctness testing ('test_xxxxx').
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//
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// =================================================================================================
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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// Includes the CLBlast library (Netlib CBLAS interface)
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#include <clblast_netlib_c.h>
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// =================================================================================================
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// Example use of the single-precision routine SGEMM
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int main(void) {
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// Example SGEMM arguments
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const int m = 128;
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const int n = 64;
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const int k = 512;
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const float alpha = 0.7f;
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const float beta = 1.0f;
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const int a_ld = k;
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const int b_ld = n;
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const int c_ld = n;
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// Populate host matrices with some example data
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float* host_a = (float*)malloc(sizeof(float)*m*k);
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float* host_b = (float*)malloc(sizeof(float)*n*k);
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float* host_c = (float*)malloc(sizeof(float)*m*n);
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for (int i=0; i<m*k; ++i) { host_a[i] = 12.193f; }
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for (int i=0; i<n*k; ++i) { host_b[i] = -8.199f; }
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for (int i=0; i<m*n; ++i) { host_c[i] = 0.0f; }
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// Call the SGEMM routine.
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cblas_sgemm(CLBlastLayoutRowMajor,
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CLBlastTransposeNo, CLBlastTransposeNo,
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m, n, k,
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alpha,
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host_a, a_ld,
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host_b, b_ld,
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beta,
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host_c, c_ld);
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// Example completed
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printf("Completed SGEMM\n");
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// Clean-up
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free(host_a);
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free(host_b);
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free(host_c);
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return 0;
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}
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// =================================================================================================
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