Ok, please close your eyes now if you don't want to know about mmap, brk, sbrk and omalloc :) This is joint debugging work with cwitty!
If the import fails it always fails after importing: sage.rings.polynomial.all -- sage/rings/all.py:93 with error: no more memory System 0k:0k Appl 0k/0k Malloc 0k/0k Valloc 0k/0k Pages 0/0 Regions 0:0 strace reveals: working version is pid 30120 failure is pid 30195 [pid 30120] stat("/space/wstein/farm/sage-3.3.alpha3/local/lib/ python2.5/site-packages/sage/rings/polynomial/ multi_polynomial_libsingular", 0x7fff39631240) = -1 ENOENT (No such file or directory) [pid 30195] stat("/space/wstein/farm/sage-3.3.alpha3/local/lib/ python2.5/site-packages/sage/rings/polynomial/ multi_polynomial_libsingular", 0x7fff51e26a30) = -1 ENOENT (No such file or directory) [pid 30120] open("/space/wstein/farm/sage-3.3.alpha3/local/lib/ python2.5/site-packages/sage/rings/polynomial/ multi_polynomial_libsingular.so", O_RDONLY) = 7 [pid 30195] open("/space/wstein/farm/sage-3.3.alpha3/local/lib/ python2.5/site-packages/sage/rings/polynomial/ multi_polynomial_libsingular.so", O_RDONLY) = 7 [pid 30120] fstat(7, {st_mode=S_IFREG|0755, st_size=1629513, ...}) = 0 [pid 30195] fstat(7, {st_mode=S_IFREG|0755, st_size=1629513, ...}) = 0 [pid 30120] open("/space/wstein/farm/sage-3.3.alpha3/local/lib/ python2.5/site-packages/sage/rings/polynomial/ multi_polynomial_libsingular.so", O_RDONLY) = 8 [pid 30195] open("/space/wstein/farm/sage-3.3.alpha3/local/lib/ python2.5/site-packages/sage/rings/polynomial/ multi_polynomial_libsingular.so", O_RDONLY) = 8 [pid 30120] read(8, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0> \0\1\0\0\0\360\366\0\0\0\0\0\0@"..., 832) = 832 [pid 30195] read(8, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0> \0\1\0\0\0\360\366\0\0\0\0\0\0@"..., 832) = 832 [pid 30120] fstat(8, {st_mode=S_IFREG|0755, st_size=1629513, ...}) = 0 [pid 30195] fstat(8, {st_mode=S_IFREG|0755, st_size=1629513, ...}) = 0 [pid 30120] mmap(NULL, 2685464, PROT_READ|PROT_EXEC, MAP_PRIVATE| MAP_DENYWRITE, 8, 0) = 0x7f1114b6d000 [pid 30195] mmap(NULL, 2685464, PROT_READ|PROT_EXEC, MAP_PRIVATE| MAP_DENYWRITE, 8, 0) = 0x7f492e6ed000 [pid 30120] mprotect(0x7f1114be4000, 2093056, PROT_NONE) = 0 [pid 30195] mprotect(0x7f492e764000, 2093056, PROT_NONE) = 0 [pid 30120] mmap(0x7f1114de3000, 102400, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x76000) = 0x7f1114de3000 [pid 30195] mmap(0x7f492e963000, 102400, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x76000) = 0x7f492e963000 [pid 30120] mmap(0x7f1114dfc000, 2584, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1114dfc000 [pid 30195] mmap(0x7f492e97c000, 2584, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f492e97c000 [pid 30120] close(8) = 0 [pid 30195] close(8) = 0 [pid 30120] open("/space/wstein/farm/sage-3.3.alpha3/local/lib/ libsingular.so", O_RDONLY) = 8 [pid 30195] open("/space/wstein/farm/sage-3.3.alpha3/local/lib/ libsingular.so", O_RDONLY) = 8 [pid 30120] read(8, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0> \0\1\0\0\0000\201\7\0\0\0\0\0@"..., 832) = 832 [pid 30195] read(8, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0> \0\1\0\0\0000\201\7\0\0\0\0\0@"..., 832) = 832 [pid 30120] fstat(8, {st_mode=S_IFREG|0755, st_size=14065013, ...}) = 0 [pid 30195] fstat(8, {st_mode=S_IFREG|0755, st_size=14065013, ...}) = 0 [pid 30120] mmap(NULL, 5775120, PROT_READ|PROT_EXEC, MAP_PRIVATE| MAP_DENYWRITE, 8, 0) = 0x7f11145eb000 [pid 30195] mmap(NULL, 5775120, PROT_READ|PROT_EXEC, MAP_PRIVATE| MAP_DENYWRITE, 8, 0) = 0x7f492e16b000 [pid 30120] mprotect(0x7f111495e000, 2097152, PROT_NONE) = 0 [pid 30195] mprotect(0x7f492e4de000, 2097152, PROT_NONE) = 0 [pid 30120] mmap(0x7f1114b5e000, 57344, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x373000) = 0x7f1114b5e000 [pid 30195] mmap(0x7f492e6de000, 57344, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 8, 0x373000) = 0x7f492e6de000 [pid 30120] mmap(0x7f1114b6c000, 3856, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1114b6c000 [pid 30195] mmap(0x7f492e6ec000, 3856, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f492e6ec000 [pid 30120] close(8) = 0 [pid 30195] close(8) = 0 [pid 30120] gettimeofday({1233289115, 517188}, NULL) = 0 [pid 30195] gettimeofday({1233289330, 751145}, NULL) = 0 [pid 30120] brk(0x1b6a030) = 0x1b6a030 [pid 30195] brk(0x2617030) = 0x2611000 [pid 30120] brk(0x1b6b000) = 0x1b6b000 [pid 30195] brk(0x2617030) = 0x2611000 *boom* - note that brk(0x2617030) is identical in two subsequent calls! Linux Notes The return value described above for brk() is the behavior provided by the glibc wrapper function for the Linux brk() system call. (On most other implementations, the return value from brk() is the same; this return value was also specified in SUSv2.) However, the actual Linux system call returns the new program break on success. On failure, the system call returns the current break. The glibc wrapper function does some work (i.e., checks whether the new break is less than addr) to provide the 0 and -1 return values described above. On Linux, sbrk() is implemented as a library function that uses the brk() system call, and does some internal bookkeeping so that it can return the old break value. [pid 30120] mmap(NULL, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE| MAP_ANONYMOUS, -1, 0) = 0x7f1131638000 [pid 30120] stat("/space/wstein/farm/sage-3.3.alpha3/local/lib/ python2.5/site-packages/sage/rings/finite_field_ntl_gf2e", 0x7fff3962ee60) = -1 ENOENT (No such file or directory) [pid 30120] open("/space/wstein/farm/sage-3.3.alpha3/local/lib/ python2.5/site-packages/sage/rings/finite_field_ntl_gf2e.so", O_RDONLY) = 8 [pid 30120] fstat(8, {st_mode=S_IFREG|0755, st_size=582890, ...}) = 0 [pid 30120] open("/space/wstein/farm/sage-3.3.alpha3/local/lib/ python2.5/site-packages/sage/rings/finite_field_ntl_gf2e.so", O_RDONLY) = 9 [pid 30120] read(9, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0r \0\0\0\0\0\0@"..., 832) = 832 [pid 30120] fstat(9, {st_mode=S_IFREG|0755, st_size=582890, ...}) = 0 [pid 30120] mmap(NULL, 2303864, PROT_READ|PROT_EXEC, MAP_PRIVATE| MAP_DENYWRITE, 9, 0) = 0x7f11143b8000 [pid 30120] mprotect(0x7f11143e1000, 2097152, PROT_NONE) = 0 [pid 30120] mmap(0x7f11145e1000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 9, 0x29000) = 0x7f11145e1000 [pid 30120] mmap(0x7f11145ea000, 1912, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f11145ea000 [pid 30120] close(9) = 0 [pid 30195] write(2, "\nerror: no more memory\n"..., 23) = 23 [pid 30195] write(2, "System 0k:0k Appl 0k/0k Malloc 0k"..., 72) = 72 [pid 30195] write(1, "eric -- sage/rings/padics/padic_r"..., 3848) = 3848 [pid 30195] exit_group(14) = ? Process 30195 detached --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---