On 08.11.2017 15:38, Ralf Stubner wrote: > However, I have just found a very similar issue > where clBLAS is named as the source of the error: > https://github.com/Theano/libgpuarray/issues/216#issuecomment-232225071
I have found another similar bug report: https://github.com/clMathLibraries/clBLAS/issues/20 Following the suggestions there I have now build a custom version of libclblas2 with the patch: --- clblas-2.12.orig/src/library/blas/generic/common.c +++ clblas-2.12/src/library/blas/generic/common.c @@ -539,8 +539,8 @@ setupBuildOpts( #if !defined NDEBUG // Nvidia runtime does not appear to support the -g flag, at least in their OpenCL v1.1 runtime - if( target.ident.vendor != VENDOR_NVIDIA ) - addBuildOpt( opts, BUILD_OPTS_MAXLEN, "-g" ); + //if( target.ident.vendor != VENDOR_NVIDIA ) + // addBuildOpt( opts, BUILD_OPTS_MAXLEN, "-g" ); #endif /* NDEBUG */ if (target.ident.vendor == VENDOR_NVIDIA && [Of course, this patch does not make sense for general consumption.] With this patched libclblas2 installed, my fastLm program works also with libarrayfire-opencl3. > The binary distribution from upstream is not linked with the system > clBLAS. It might actually use clBlast instead (cf > https://arrayfire.com/arrayfire-v3-5-official-release/). It is interesting to note that the clBLAS used by upstream contains the same code: https://github.com/arrayfire/clBLAS/blob/arrayfire-release/src/library/blas/generic/common.c#L540-L544 However, it seems that they define NDEBUG during compilation, so that the relevant code parts are never triggered. Maybe defining NDEBUG would be the right patch for libclblas? > In the end > latest upstream version might solve this issue, but I am not sure. I meanwhile think that it probably would not help. However, upstream's binary version is quite a bit faster on my hardware, so an updated version would still be appreciated. cheerio ralf -- Ralf Stubner Senior Software Engineer / Trainer R Institute GmbH Dortustraße 48 14467 Potsdam T: +49 331 23 70 81 66 F: +49 331 23 70 81 67 M: +49 162 20 91 196 Mail: ralf.stub...@r-institute.com Sitz: Potsdam Register: AG Potsdam HRB 27966 P Ust.-IdNr.: DE300072622 Geschäftsführer: Prof. Dr. Dr. Karl-Kuno Kunze
smime.p7s
Description: S/MIME Cryptographic Signature
