search for: flexiblas

I agree that the "R Installation and Administration" guide statement about FlexiBLAS needs an update. Standard R in CentOS Stream 9, which is now downstream from Fedora, gives the following result for Matrix products in sessionInfo(): > sessionInfo() R version 4.3.1 (2023-06-16) Platform: x86_64-redhat-linux-gnu (64-bit) Running under: CentOS Stream 9 Matrix products: default...

On 10/11/23 23:12, George Ostrouchov wrote: > I agree that the "R Installation and Administration" guide statement about FlexiBLAS needs an update. Standard R in CentOS Stream 9, which is now downstream from Fedora, gives the following result for Matrix products in sessionInfo(): > >> sessionInfo() > R version 4.3.1 (2023-06-16) > Platform: x86_64-redhat-linux-gnu (64-bit) > Running under: CentOS Stream 9 &gt...

Hi, R has been built against FlexiBLAS in rawhide [1, 2]. These are the R packages that need to be rebuilt: R-ape-0:5.4-2.fc33.x86_64 R-expm-0:0.999.4-7.fc33.x86_64 R-gee-0:4.13.20-4.fc33.x86_64 R-gss-0:2.2.2-3.fc33.x86_64 R-igraph-0:1.2.5-3.fc33.x86_64 R-msm-0:1.6.8-5.fc33.x86_64 R-preprocessCore-0:1.50.0-4.fc33.x86_64 R-qtl-0:1.46.2-...

...h-arch_64=x86-64-v2 --with-arch_32=x86-64 --build=x86_64-redhat-linux --with-build-config=bootstrap-lto --enable-link-serialization=1 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 11.4.1 20230605 (Red Hat 11.4.1-2) (GCC) I have been building R 4.4.0 and 4.4.1 with Flexiblas and with the built in R BLAS/LAPACK. R BLAS: ./configure --prefix=/tools/R/$RVER --enable-R-shlib --enable-memory-profiling --with-pcre2=/tools/pcre2/10.42 Flexiblas: PKG_CONFIG_PATH=/tools/flexiblas/3.4.2/lib64/pkgconfig ./configure --prefix=/tools/R/flexiblas/4.4.1 --enable-R-shlib --enable...

Dear Miguel Esteva, I couldn't get a Red Hat "ubi9" container to install enough dependencies to build R. Is there a way to reproduce your setup on a virtual machine somewhere? On Fri, 3 May 2024 00:42:43 +0000 Miguel Esteva via R-help <r-help at r-project.org> wrote: > *** caught segfault *** > > address 0x1801fa8f70, cause 'memory not mapped' > >

I've not worked changing underlying computational infrastructure, but developers who do might want to use ideas from FlexiBLAS. Apologies in advance if this is well-known. Best JN > From: Martin Koehler koehlerm at mpi-magdeburg.mpg.de > Date: January 07, 2016 > Subject: FlexiBLAS Version 1.3.0 Release > > It is our pleasure to announce the new release of FlexiBLAS. We do not > provide yet another BLAS...

...ADS=1 is a solution. There isn't much R can do about the behaviour of the BLAS, because there is no standard interface to set the number of threads. Some BLASes (like ATLAS) don't even offer it as a tunable number at all [*]. A system administrator could link the installation of R against FlexiBLAS [**], provide safe defaults in the environment variables and educate the users about its tunables [***], but that's a choice just like it had been a choice to link R against a parallel variant of OpenBLAS on a shared computer. This is described in R Installation and Administration, section A.3....

...this in 83986 [1] needs a fix in Lapack.c: if (dladdr((void *) F77_NAME(ilaver), &dl_info)) { char buf[PATH_MAX+1]; char *res = realpath(dl_info.dli_fname, buf); if (res) { SEXP nfo = R_NilValue; if (strstr(res, "flexiblas")) nfo = R_flexiblas_info(); if (isNull(nfo)) nfo = mkChar(""); ans = ScalarString(nfo); break; } } It will always return an empty string except for flexiblas. I assume this i...

Hello, Would a less resource-intensive value, such as 1, be a safer default CPU value for confint? I noticed excessive CPU usage on a I.T. administrator-managed server which was being three-quarters used by another staff member when the confidence interval calculation in an R Markdown document suddenly changed from two seconds to ninety seconds because of competition for CPUs between users. Also,

...mes undesired (e.g. your case). A single setting > is probably far from enough. > >> Does R even know whether a linked library is doing multi-processing? > > Unfortunately, no, there is no standard interface for that. Best I can > recommend is to link your R installation with FlexiBLAS and then use the > 'flexiblas' CRAN package to talk to it. [[alternative HTML version deleted]]

...tic.c(77): error: pointer to incomplete class type is not allowed exc->retval = 0.0; icc -std=c99 -std=gnu11 -I../../src/extra -I../../src/extra/xdr -I. -I../../src/include -I../../src/include -I/usr/local/include -I../../src/nmath -DHAVE_CONFIG_H -fopenmp -fpic -g -O3 -wd188 -ip -mp -c flexiblas.c -o flexiblas.o icc: command line remark #10148: option '-mp' not supported compilation aborted for arithmetic.c (code 2) make[3]: *** [../../Makeconf:129: arithmetic.o] Error 2 make[3]: *** Waiting for unfinished jobs.... icc: command line remark #10148: option '-mp' not supported...

From the R Installation and Admin manual: "There is a tendency for re-distributors of R to use ?enhanced? linear algebra libraries without explaining their downsides.? There?s a downside not mentioned in the manual that caught and baffled me for a while. I was using all 64 cores of an AWS instance via parallel::mclapply() and doing matrix multiplications in the parallelized function. If

...re isn't much R can do about the behaviour of the BLAS, because > there is no standard interface to set the number of threads. Some BLASes > (like ATLAS) don't even offer it as a tunable number at all [*]. > > A system administrator could link the installation of R against > FlexiBLAS [**], provide safe defaults in the environment variables and > educate the users about its tunables [***], but that's a choice just > like it had been a choice to link R against a parallel variant of > OpenBLAS on a shared computer. This is described in R Installation and > Administ...

...lowed >> ?????? exc->retval = 0.0; >> >> icc -std=c99 -std=gnu11 -I../../src/extra -I../../src/extra/xdr -I. >> -I../../src/include -I../../src/include? -I/usr/local/include >> -I../../src/nmath -DHAVE_CONFIG_H?? -fopenmp -fpic? -g -O3 -wd188 -ip >> -mp? -c flexiblas.c -o flexiblas.o >> icc: command line remark #10148: option '-mp' not supported >> compilation aborted for arithmetic.c (code 2) >> make[3]: *** [../../Makeconf:129: arithmetic.o] Error 2 >> make[3]: *** Waiting for unfinished jobs.... >> icc: command line rema...

Virtio BoF minutes KVM Forum 2017 Attendees: Amnon Ilan, Maxime Coqueline, Vlad Yasevich, Malcolm Crossley, David Vrabel, Ilya Lesokhin, Cunming Lian, Jens Freimann Topics: packed ring layout with respect to hardware implementations References: https://lists.oasis-open.org/archives/virtio-dev/201702/msg00010.html https://lists.oasis-open.org/archives/virtio-dev/201709/msg00013.html Malcolm

Virtio BoF minutes KVM Forum 2017 Attendees: Amnon Ilan, Maxime Coqueline, Vlad Yasevich, Malcolm Crossley, David Vrabel, Ilya Lesokhin, Cunming Lian, Jens Freimann Topics: packed ring layout with respect to hardware implementations References: https://lists.oasis-open.org/archives/virtio-dev/201702/msg00010.html https://lists.oasis-open.org/archives/virtio-dev/201709/msg00013.html Malcolm

...vector for argument what. A new generic, nameOfClass(), is called to resolve the class name from what. This supports experimenting with alternative object systems. Based on contributions by Tomasz Kalinowski in PR#18485. * Detection of BLAS/LAPACK in use (sessionInfo()) with FlexiBLAS now reports the current backend. * The "data.frame" method for subset() now warns about extraneous arguments, typically catching the use of = instead of == in the subset expression. * Calling a:b when numeric a or b is longer than one may now be made into...

...vector for argument what. A new generic, nameOfClass(), is called to resolve the class name from what. This supports experimenting with alternative object systems. Based on contributions by Tomasz Kalinowski in PR#18485. * Detection of BLAS/LAPACK in use (sessionInfo()) with FlexiBLAS now reports the current backend. * The "data.frame" method for subset() now warns about extraneous arguments, typically catching the use of = instead of == in the subset expression. * Calling a:b when numeric a or b is longer than one may now be made into...