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Memory Profiling
One thing SAGE is lacking is the ability to profile memory usage of a calculation. There are some tools available for Python allowing to inspect the used memory at a given point in time, however nothing seems to exist to draw pretty pictures of mem usage during the calculation. A workaround is to use a shell script sampling the SAGE process’ RAM usage every couple of seconds and write that information to some file. Such a script was posted to this forum and after some slight patching + wrapping. the memory usage of my F4 implementation computing a lexicographical Gröbner basis for a CTC ideal with B=4 and Nr=3 looks like this.
The graph doesn’t say much - because the Python garbage collector might interfear - besides that the memory consumption is 3.5 GB max for this Gröbner basis calculation. Still, I guess 2.x GB after the calculation finished points to a memory leak somewhere.
Elsewhere: Looks like Uni-Bremen is benchmarker’s heaven.
