|Bill Allombert on Wed, 24 Feb 2016 11:20:11 +0100|
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|Re: Multi-threading safe?|
On Wed, Feb 24, 2016 at 10:05:21AM +0100, Rafael Guglielmetti wrote: > Dear PARI users, > I would like to know if the PARI library is thread safe? More > precisely I would like to know if I can use the library from inside a > parallelized loop (via OpenMP) or if I may get problem with PARI's > stack? Hello Rafael, You need to build PARI with the Configure flag --enable_tls or --mt=pthread (Debian and Ubuntu packages are built this way), then you need to allocate separate PARI stacks for each threads, using pari_thread_alloc()/pari_thread_start(). See the example file 'examples/openmp.c' in the PARI distribution and the appendix 'PARI and threads' in the documentation. Cheers, Bill.