My code runs fine on Win7 32bit and 64bit, Osx 64bit and Linux 32bit, but produces a seg fault on Linux 64. I'm using 2012 Composer XE.
Here is the back trace:
Program received signal SIGSEGV, Segmentation fault.
0x000000000081650b in dgeqp3_ ()
#0 0x000000000081650b in dgeqp3_ ()
#1 0x00000000007fe831 in T.76 ()
#2 0x0000000000801c08 in dlevmar_lec_dif ()
#3 0x00000000007e8bec in dlevmar_blec_dif ()
#4 0x000000000077f6ea in FELMOptimizeMethod::Solve (this=0x1bc6dd0, pOpt=0x7fffffff7f88) at levmar.cpp:159
#5 0x00000000005f43da in FEOptimizeData::Solve (this=0x7fffffff7f88) at FEOptimizer.cpp:396
#6 0x000000000079631c in optimize (fem=..., szfile=0x7fffffff80e3 "demo_opt.feb") at optimize.cpp:482
#7 0x000000000048d401 in main (argc=3, argv=0x7fffffff9448) at FEBio.cpp:156
It's particulary curious since I'm using the same compiler on Linux 32 bit. Have you seen this error before?