On Tuesday, May 6, 2014 12:14:50 AM UTC+2, William wrote:
> Hi,
>
> Does anybody know how much RAM is required to build Sage these days.
> With MAKE not set, typing "make" with sage-6.2.rc2 on a VM with 4GB
> RAM results in failure (see below). Of course, I'm not using swap,
> and of course with swap you can do anything if you're willing to wait.
> That said, it would be very useful to have some sort of statement
> about required RAM, like we now have for disk space: "Make sure you
> have the dependencies and 5 GB of free disk space."
>
> [reference] build succeeded.
> Build finished. The built documents can be found in
> /usr/local/sage/sage-6.2.rc2
> /src/doc/output/html/en/reference
> Error building the documentation.
> Traceback (most recent call last):
>
<SNIP>
> self.pid = os.fork()
> OSError: [Errno 12] Cannot allocate memory
> make: *** [doc-html] Error 1
>
> real 233m9.925s
> user 197m29.292s
> sys 22m18.145s
> salvus@salvus-base:/usr/local/sage/sage-6.2.rc2$ echo $MAKE
>
Retry that with SAGE_NUM_THREADS={1,2} ?
2 GB should IMHO be sufficient to build the docs (with 1 thread); testing
is another issue because of a few still greedy tests...
-leif
P.S.: If you haven't set MAKE, Sage "guesses" the number of threads to use
to build the Sage library as well as the docs, AFAIK.
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