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POclGetProgramInfo CL_PROGRAM_BINARY_SIZES Incorrect Results?
 

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  1. POclGetProgramInfo CL_PROGRAM_BINARY_SIZES Incorrect Results?
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    <p>I am trying to cache a program in a file so that it does not need to compile to assembly. Consequently, I am trying to dump the binaries. I am getting an issue where the binary program returned alternately has garbage data at the end.</p> <p>Error checking omitted for clarity (no errors occur, though):</p> <pre><code>clGetProgramInfo(kernel-&gt;program, CL_PROGRAM_BINARY_SIZES, 0,NULL, &amp;n); n /= sizeof(size_t); size_t* sizes = new size_t[n]; clGetProgramInfo(kernel-&gt;program, CL_PROGRAM_BINARY_SIZES, n*sizeof(size_t),sizes, NULL); </code></pre> <p>I have confirmed that kernel->program is identical between times. In the above code, "n" is invariably 1, but sizes[0] varies between 2296 and 2312 alternate runs. </p> <p>The problem is that the 2296 number appears to be more accurate--after the final closing brace in the output, there are three newlines and then three spaces.</p> <p>For the 2312 number, after the final closing brace in the output, there are the three newlines, a line of garbage data, and then the three spaces.</p> <p>Naturally, the line of garbage data is problematic. I'm not sure how to get rid of it, and I'm pretty sure it's not an error on my part.</p> <p>NVIDIA GeForce GTX 580M, with driver 305.60 on Windows 7.</p> <p><strong>Update:</strong> I have changed the code to the following:</p> <pre><code>//Get how many devices there are size_t n; clGetProgramInfo(kernel-&gt;program, CL_PROGRAM_NUM_DEVICES, 0,NULL, &amp;n); //Get the list of binary sizes size_t* sizes = new size_t[n]; clGetProgramInfo(kernel-&gt;program, CL_PROGRAM_BINARY_SIZES, n*sizeof(size_t),sizes, NULL); //Get the binaries unsigned char** binaries = new unsigned char*[n]; for (int i=0;i&lt;(int)n;++i) { binaries[i] = new unsigned char[sizes[i]]; } clGetProgramInfo(kernel-&gt;program, CL_PROGRAM_BINARIES, n*sizeof(unsigned char*),binaries, NULL); </code></pre> <p>Now, the code has n = 4, but only sizes[0] contains meaningful information (so the alloc of sizes[1] fails in the loop). Thoughts?</p>
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