ASKSAGE: Sage Q&A Forum - RSS feedhttps://ask.sagemath.org/questions/Q&A Forum for SageenCopyright Sage, 2010. Some rights reserved under creative commons license.Wed, 06 Nov 2019 20:24:11 +0100Kernel died when computing nullspace of a large matrixhttps://ask.sagemath.org/question/48650/kernel-died-when-computing-nullspace-of-a-large-matrix/I have a large sparse matrix with dimension roughly 100,000 by 70,000. Its only nonzero entries are 1 and -1. I'm trying to use the right_kernel command to calculate its kernel over the rational numbers. However, whenever I run the code, I get a message that says "the kernel appears to have died. It will restart automatically." Does this mean I'm running out of memory on my computer? Any ideas on how to address this? All this is done in a Jupyter notebook. Thank you!Wed, 06 Nov 2019 18:15:57 +0100https://ask.sagemath.org/question/48650/kernel-died-when-computing-nullspace-of-a-large-matrix/Comment by tmonteil for <p>I have a large sparse matrix with dimension roughly 100,000 by 70,000. Its only nonzero entries are 1 and -1. I'm trying to use the right_kernel command to calculate its kernel over the rational numbers. However, whenever I run the code, I get a message that says "the kernel appears to have died. It will restart automatically." Does this mean I'm running out of memory on my computer? Any ideas on how to address this? All this is done in a Jupyter notebook. Thank you!</p>
https://ask.sagemath.org/question/48650/kernel-died-when-computing-nullspace-of-a-large-matrix/?comment=48656#post-id-48656Could you please provide the code that you used to construct your matrix ?Wed, 06 Nov 2019 20:24:11 +0100https://ask.sagemath.org/question/48650/kernel-died-when-computing-nullspace-of-a-large-matrix/?comment=48656#post-id-48656