On 13 September 2024 14:20:01 BST, Kevin Youren <kyou...@gmail.com> wrote:
>Thanks Oscar,
>
>If I can work out how to do the pip install, I will try the -j1.
Did you try my suggestion, with exporting variables?
These export statements can be put into
build/pkgs/scipy/spkg-install.in
Oscar's hack can also be done by appropriate changes to the same file.
>
>The simple thing is, make by itself is supposed to NOT have multiple
>instances running.
>
>At the moment, I run make, it uses multiple cpus, but not all 12. When it
>gets to scipy , it uses all 12 cpus, then "overheats" and the machine stops.
>
>I run make again, it restarts from the beginning of scipy, finishes scipy
>successfully, still using all 12 cpus, and then carries on to the end of
>the build.
>
>It would be nice to have more control of the build process.
>
>regards, Kevin
>
>
>
>On Friday 13 September 2024 at 21:29:07 UTC+10 oscar.j....@gmail.com wrote:
>
>> On Thu, 12 Sept 2024 at 14:25, Dima Pasechnik <dim...@gmail.com> wrote:
>> >
>> > Sage merely invokes pip to build scipy from source.
>> >
>> > Indeed, apart from ninja paralellism there is meson parallelism,
>> > which is controlled by JOBS env. variable (?).
>> > Note that JOBS should be just a number.
>>
>> I think meson just delegates the parallelism to ninja but the idea is
>> that if you are using meson then you communicate with meson rather
>> than with the ninja "backend".
>>
>> My point though was more that maybe the Sage build should invoke the
>> SciPy build without parallelism like:
>>
>> pip install --config-settings=setup-args="-j1" scipy
>>
>> If someone is already running make -j6 or whatever to build Sage then
>> they likely don't need/want meson to bring in extra parallelism on
>> top.
>>
>> --
>> Oscar
>>
>
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