For 10.5 with python 3.12.5, sage.parallel.ncpus.ncpus() is 1 without giving a value to SAGE_NUM_THREADS and 16 if sage is opened as "SAGE_NUM_THREADS=16 sage". For 10.6.beta9 (python 3.13.2), the value is always one; in another computer 10.6.beta9 is using python 3.12.5 and the value is always one. El miércoles, 12 de marzo de 2025 a las 6:15:27 UTC+9, dim...@gmail.com escribió:
> On Mon, Mar 10, 2025 at 4:28 AM enriqu...@gmail.com > <enriqu...@gmail.com> wrote: > > > > If I set the variable SAGE_NUM_THREADS to a number of cores before > opening a sage session (command line or jupyterlab) there is a different > behaviour in 10.5 and in 10.6beta; > > parallel computation can be done in 10.5, there is no effect in the beta > version (I do not know when it started to fail). In the beta version > parallel computation is possible declaring the number of cores using the > following hack (suggested to me at some point by Miguel Marco) > > def miscpus(): > > return "put here the number of cores" > > sage.parallel.ncpus.ncpus=miscpus > > Is it possible to know when SAGE_NUM_THREADS lost its effects? > > what is the output of sage.parallel.ncpus.ncpus() in 10.5 and in > 10.6.beta* for you? > (without using the hack above). Are they using the same Python version? > > The code for sage.parallel.ncpus.ncpus didn't change for a year, since > 10.3. > > Dima > > > > > > Thanks, Enrique. > > > > -- > > You received this message because you are subscribed to the Google > Groups "sage-devel" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sage-devel+...@googlegroups.com. > > To view this discussion visit > https://groups.google.com/d/msgid/sage-devel/fe02ae5f-64ab-4fb5-a826-d97f3d418dccn%40googlegroups.com > . > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/sage-devel/d10dbc30-8d83-4aa7-9ca9-cb6152c7d340n%40googlegroups.com.
