Memory allocation failure

Dear all,
I am trying to partition a small test mesh with 16 triangles among 4 cores (one partition per core and using ParMETIS_V3_PartKway with idx_t = long int and real_t = double) and got the failure message:
...
Current memory used: 50932 bytes
Maximum memory used: 50932 bytes
***Memory allocation failed for CommSetup: sendind. Requested size: 6917529033546661920 bytes
...

However, if I partition this mesh among 2 cores everything goes fine. I would appreciate if anyone could give me some information about
what could possible be wrong. I posted below some output with all data I used.

Best regards,

Felix C. G. Santos
____________________________________
Department of Mechanical Engineering
Federal University of Pernambuco
Brazil
==========================================================================

I am partitioning geomMeshes - preProcessor::partitionGeomMeshes
- executing GeomManager::partitionGeomMeshes
rank = 0 - szAdj = 10 - szVtx = 5 - GeomManager::partitionGeomMeshes
vwgt = NULL - adjwgt = NULL - wgtflag = 0 - numflag = 0 - ncon = 1 - nparts = 4
options[0] = 0, options[1] = 0, options[2] = 0 - edgecut = 0 - ubvec = 1.05
szFaces = 4 - szComm = 4 - nparts = 4 - GeomManager::partitionGeomMeshes
xadj(0) = 0 - adjncy:
11
13
xadj(1) = 2 - adjncy:
12
14
xadj(2) = 4 - adjncy:
13
6
15
xadj(3) = 7 - adjncy:
14
9
10
vtxdist(0) = 0
vtxdist(1) = 4
vtxdist(2) = 8
vtxdist(3) = 12
vtxdist(4) = 16
tpwgts(0) = 0.25
tpwgts(1) = 0.25
tpwgts(2) = 0.25
tpwgts(3) = 0.25
rank = 2 - szAdj = 12 - szVtx = 5 - GeomManager::partitionGeomMeshes
vwgt = NULL - adjwgt = NULL - wgtflag = 0 - numflag = 0 - ncon = 1 - nparts = 4
options[0] = 0, options[1] = 0, options[2] = 0 - edgecut = 0 - ubvec = 1.05
szFaces = 4 - szComm = 4 - nparts = 4 - GeomManager::partitionGeomMeshes
xadj(0) = 0 - adjncy:
7
2
9
xadj(1) = 3 - adjncy:
8
5
15
xadj(2) = 6 - adjncy:
15
5
11
xadj(3) = 9 - adjncy:
10
1
12
vtxdist(0) = 0
vtxdist(1) = 4
vtxdist(2) = 8
vtxdist(3) = 12
vtxdist(4) = 16
tpwgts(0) = 0.25
tpwgts(1) = 0.25
tpwgts(2) = 0.25
tpwgts(3) = 0.25
rank = 3 - szAdj = 10 - szVtx = 5 - GeomManager::partitionGeomMeshes
vwgt = NULL - adjwgt = NULL - wgtflag = 0 - numflag = 0 - ncon = 1 - nparts = 4
options[0] = 0, options[1] = 0, options[2] = 0 - edgecut = 0 - ubvec = 1.05
szFaces = 4 - szComm = 4 - nparts = 4 - GeomManager::partitionGeomMeshes
xadj(0) = 0 - adjncy:
11
13
xadj(1) = 2 - adjncy:
12
14
xadj(2) = 4 - adjncy:
13
6
15
xadj(3) = 7 - adjncy:
14
9
10
vtxdist(0) = 0
vtxdist(1) = 4
vtxdist(2) = 8
vtxdist(3) = 12
vtxdist(4) = 16
tpwgts(0) = 0.25
tpwgts(1) = 0.25
tpwgts(2) = 0.25
tpwgts(3) = 0.25
rank = 1 - szAdj = 10 - szVtx = 5 - GeomManager::partitionGeomMeshes
vwgt = NULL - adjwgt = NULL - wgtflag = 0 - numflag = 0 - ncon = 1 - nparts = 4
options[0] = 0, options[1] = 0, options[2] = 0 - edgecut = 0 - ubvec = 1.05
szFaces = 4 - szComm = 4 - nparts = 4 - GeomManager::partitionGeomMeshes
xadj(0) = 0 - adjncy:
3
0
5
xadj(1) = 3 - adjncy:
4
10
9
xadj(2) = 6 - adjncy:
14
7
xadj(3) = 8 - adjncy:
6
8
vtxdist(0) = 0
vtxdist(1) = 4
vtxdist(2) = 8
vtxdist(3) = 12
vtxdist(4) = 16
tpwgts(0) = 0.25
tpwgts(1) = 0.25
tpwgts(2) = 0.25
tpwgts(3) = 0.25
Current memory used: 50932 bytes
Maximum memory used: 50932 bytes
***Memory allocation failed for CommSetup: sendind. Requested size: 6917529033546661920 bytes
rank 3 in job 34 fcgs-desktop_43051 caused collective abort of all ranks
exit status of rank 3: killed by signal 11
rank 0 in job 34 fcgs-desktop_43051 caused collective abort of all ranks
exit status of rank 0: killed by signal 6

RE: Memory allocation failed for CommSetup: sendind. Requested size:

I have a similar error as below:
Current memory used: 926272 bytes
Maximum memory used: 3692696 bytes
***Memory allocation failed for CommSetup: sendind. Requested size: 18446744068017555236 bytes
Fatal error in MPI_Irecv:
Message truncated, error stack:
MPIDI_CH3U_Request_unpack_uebuf(641): Message truncated; 32 bytes received but buffer size is 8

mpiexec: Warning: task 0 exited with status 1.
mpiexec: Warning: task 1 died with signal 6 (Aborted).
mpiexec: Warning: tasks 2-7,10-47 died with signal 15 (Terminated).
mpiexec: Warning: tasks 8-9 died with signal 11 (Segmentation fault).