csh script crashes with out of memory in 64bit environment

csh current memory allocation:
free: 0 126 8 24 12 7 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
used: 0 2 120 232 52 17 3 3 3 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Total in use: 97824, total free: 12768
Allocated memory from 0xd17000 to 0xffffffffffffffff. Real top at 0xd32000
nbytes=1296: Out of memory

bash(64bit) -> my_application(32bit) -> my_csh_script.csh(64bit)