I'm running ray in MPI mode and I keep getting this backtrace:

Ray:21253 terminated with signal 11 at PC=47bcc0 SP=7fff1da0d818.
Backtrace:
/lb/project/bws-221-aa/software/assemblers/Ray-1.7/Ray(_ZNK14ReadAnnotation7getRankEv+0x0)[0x47bcc0]
/lb/project/bws-221-aa/software/assemblers/Ray-1.7/Ray(_ZN16MessageProcessor37call_RAY_MPI_TAG_REQUEST_VERTEX_READSEP7Message+0x11a)[0x435f2a]
/lb/project/bws-221-aa/software/assemblers/Ray-1.7/Ray(_ZN7Machine10runVanillaEv+0x24)[0x44b734]
/lb/project/bws-221-aa/software/assemblers/Ray-1.7/Ray(_ZN7Machine5startEv+0x16d0)[0x452560]
/lb/project/bws-221-aa/software/assemblers/Ray-1.7/Ray(main+0x3c)[0x4bcedc]
/lib64/libc.so.6(__libc_start_main+0xf4)[0x3ef5e1d994]
/lb/project/bws-221-aa/software/assemblers/Ray-1.7/Ray(__gxx_personality_v0+0x221)[0x4281f9]


My settings:
Ray version 1.7.0 RAY_64_BITS
License: GNU General Public License

MAXKMERLENGTH: 64
KMER_U64_ARRAY_SIZE: 2
MAXIMUM_MESSAGE_SIZE_IN_BYTES: 4000 bytes
FORCE_PACKING (don't align addresses on 8 bytes): y
ASSERT: y
HAVE_LIBZ (gz support): y
HAVE_LIBBZ2 (bz2 support): y

Rank 0: Operating System: Linux (__linux__) POSIX (OS_POSIX)
Linux (__linux__): y
GNU system (__GNUC__): y
Message-passing interface

Rank 0: Message-Passing Interface implementation: Open-MPI (OMPI_MPI_H)
1.4.3
Rank 0: Message-Passing Interface standard version: 2.1


Any ideas?

If not I guess I'll need to gdb.

Thanks

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