Hello all, I have never seen that before. Looks like a memory corruption (write beyond the allocated memory block) which tends to not get noticed until the next free().
My suggestion would be to look for malloc debug options: https://www.gnu.org/software/libc/manual/html_node/Heap-Consistency-Checking.html in particular the section on the MALLOC_CHECK_ env variable: --8<-- When MALLOC_CHECK_ is set to a non-zero value, a special (less efficient) implementation is used which is designed to be tolerant against simple errors, such as double calls of free with the same argument, or overruns of a single byte (off-by-one bugs). --8<-- You may also want to add: -roe -b no to the cactus command line in the run script to disable output buffering and get one out and err file per MPI rank. Yours Roland > We are having some issues running the Einstein Toolkit with ourSpritz code > on the Frontera cluster at TACC and I'm wondering if any of you ever saw > the error you can find in the stderr attached to this email. > > The error is > *corrupted size vs. prev_size: 0x00002b3728001060 **** > and it looks like the code crashes within a call to CCTK_WARN. > > We used both the May and November 2020 versions of the Einstein Toolkit > and they both produce the same error. We are currently a bit lost, also > because the same code and par file run fine on another cluster (MarconiA3 > at CINECA in Italy). We actually also tried a different parfile (that calls > anyway the same routine) and the same problem happens on Frontera (but not > on MarconiA3). > > It may well be a bug within Spritz when calling the CCTK_WARN function > (that for some reason does not show up on other machines) or a compilation > problem on Frontera. Have you seen a similar error? Do you have some > suggestions on how to debug it? > > Thanks, > Bruno > -- My email is as private as my paper mail. I therefore support encrypting and signing email messages. Get my PGP key from http://pgp.mit.edu .
pgpn6MLD_OBlr.pgp
Description: OpenPGP digital signature
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