Calculix solver terminates without an error

1

Hello Guys
I need one help regarding termination of ccx_dynamic / ccx_static without any error for a large assembly . Here is details.

number of:
nodes: 854312
elements: 948192

Step - Frequency Analysis (20 requested modes)
Solver - PARDISO

Determining the structure of the matrix:
Using up to 11 cpu(s) for setting up the structure of the matrix.
number of equations
1027275
number of nonzero lower triangular matrix elements
35099601

Using up to 11 cpu(s) for setting up the structure of the matrix.
number of contact spring elements=508026

Decascading the MPC’s

Determining the structure of the matrix:
Using up to 11 cpu(s) for setting up the structure of the matrix.
number of equations
1027275
number of nonzero lower triangular matrix elements
36020715

Using up to 11 cpu(s) for setting up the structure of the matrix.
Using up to 11 cpu(s) for the stress calculation.

After that exit

2
3

What are your suggestions on this issue @fgr @Calc_em ?

4

Dear @rafal.brzegowy
I got following information. What is the next step to resolve it?

number of contact spring elements=508026

Decascading the MPC’s

ALLOCATION of variable jmpc, file cascade.c, line=73, num=4554, size=4, address= 1668612144
FREEING of variable jmpc, file cascade.c, line=375: oldaddress= 1668612144
Determining the structure of the matrix:
ALLOCATION of variable mast1, file remastructar.c, line=66, num=35099601, size=4, address= 2048876608
REALLOCATION of variable irow, file remastructar.c, line=67: size(bytes)=140398404, oldaddress= 209170496,address= 209170496
ALLOCATION of variable ipointer, file remastructar.c, line=71, num=3417248, size=4, address= -2073173952
ALLOCATION of variable next, file mastruct.c, line=313, num=35099601, size=4, address= -1309396928
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=154438244, oldaddress= 2048876608,address= -1168932800
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=154438244, oldaddress= -1309396928,address= -1014411200
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=169882068, oldaddress= -1168932800,address= 1402482752
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=169882068, oldaddress= -1014411200,address= -1309376448
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=186870272, oldaddress= 1402482752,address= -1139462080
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=186870272, oldaddress= -1309376448,address= -952532928
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=205557296, oldaddress= -1139462080,address= 1402474560
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=205557296, oldaddress= -952532928,address= -1309360064
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=226113024, oldaddress= 1402474560,address= -1103753152
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=226113024, oldaddress= -1309360064,address= 1402519616
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=248724324, oldaddress= -1103753152,address= 1628745792
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=248724324, oldaddress= 1402519616,address= -1309372352
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=273596756, oldaddress= 1628745792,address= -1060573120
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=273596756, oldaddress= -1309372352,address= 1402511424
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=300956428, oldaddress= -1060573120,address= 1676202048
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=300956428, oldaddress= 1402511424,address= -1309388736
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=331052068, oldaddress= 1676202048,address= 1977233472
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=331052068, oldaddress= -1309388736,address= 1402482752
REALLOCATION of variable mast1, file insert.c, line=59: size(bytes)=364157272, oldaddress= 1977233472,address= -1309384640
REALLOCATION of variable next, file insert.c, line=60: size(bytes)=364157272, oldaddress= 1402482752,address= 1733587008
REALLOCATION of variable irow, file mastruct.c, line=742: size(bytes)=337909944, oldaddress= 209170496,address= 2097836096
Using up to 11 cpu(s) for setting up the structure of the matrix.
ALLOCATION of variable ithread, file mastruct.c, line=765, num=11, size=4, address= -2040427408
FREEING of variable ithread, file mastruct.c, line=771: oldaddress= -2040427408
number of equations
1027275
number of nonzero lower triangular matrix elements
36020715

Using up to 11 cpu(s) for setting up the structure of the matrix.
ALLOCATION of variable ithread, file mastruct.c, line=841, num=11, size=4, address= -2040427664
FREEING of variable ithread, file mastruct.c, line=847: oldaddress= -2040427664
FREEING of variable next, file mastruct.c, line=875: oldaddress= 1733587008
FREEING of variable ipointer, file remastructar.c, line=89: oldaddress= -2073173952
FREEING of variable mast1, file remastructar.c, line=89: oldaddress= -1309384640
REALLOCATION of variable irow, file remastructar.c, line=90: size(bytes)=145863060, oldaddress= 2097836096,address= 2097836096
ALLOCATION of variable f, file arpack.c, line=370, num=1027275, size=8, address= 2048901184
ALLOCATION of variable xstiff, file arpack.c, line=374, num=314543088, size=8, address= -1859174336
ALLOCATION of variable v, file arpack.c, line=377, num=3417248, size=8, address= 2057179200
ALLOCATION of variable fn, file arpack.c, line=379, num=3417248, size=8, address= 2084630592
ALLOCATION of variable stx, file arpack.c, line=380, num=69898464, size=8, address= 1402478656
ALLOCATION of variable eme, file arpack.c, line=381, num=69898464, size=8, address= 657231936
ALLOCATION of variable inum, file arpack.c, line=385, num=854312, size=4, address= 1706512448
ALLOCATION of variable vini, file arpack.c, line=389, num=3417248, size=8, address= 2112057408
ALLOCATION of variable eei, file arpack.c, line=390, num=69898464, size=8, address= 1216499776
ALLOCATION of variable stiini, file arpack.c, line=391, num=45513216, size=8, address= -1309372352
ALLOCATION of variable emeini, file arpack.c, line=392, num=45513216, size=8, address= 122282048
ALLOCATION of variable neapar, file results.c, line=204, num=11, size=4, address= -2040427984
ALLOCATION of variable nebpar, file results.c, line=205, num=11, size=4, address= -2040427856
ALLOCATION of variable ipar, file elementcpuload.c, line=33, num=1456218, size=4, address= 2139426880
FREEING of variable ipar, file elementcpuload.c, line=62: oldaddress= 2139426880
ALLOCATION of variable fn1, file results.c, line=208, num=37589728, size=8, address= 1775718464
ALLOCATION of variable qa1, file results.c, line=209, num=44, size=8, address= 190517760
ALLOCATION of variable nal, file results.c, line=210, num=11, size=4, address= -2040428368
ALLOCATION of variable energysms1, file results.c, line=211, num=11, size=8, address= 190509808
Using up to 11 cpu(s) for the stress calculation.

ALLOCATION of variable ithread, file results.c, line=243, num=11, size=4, address= -2040428432

5

Maybe the pre-allocation of the memory is large as in the referenced problem above. Try to have a smaller model and debug. Try spooles, and the other solvers. Start simple.

6

@pushpa.raj
I have just run a test job with a simple cube:

nodes: 425072
elements: 297343
number of equations
1275216
number of nonzero lower triangular matrix elements
52093725

Job finished

this job required app. 25 GByte physical memory.
By increasing the number of elements it seems that ccx will fails when the job ran out of physical memory.
Your problem could be You’re running out of physical memory, so my best advice to You will be as already advised from @jbr try to reduce the number of elements by use of a rougher mesh where the structure isn’t sensitive for local stresses.

1 Like
7

Close to a milion elements - that’s really a lot for a solver like CalculiX and rarely needed in practice. Can you show your mesh ? I’m pretty sure its size can be reduced.

1 Like
8

Maybe OOC for PARDISO solver (“running out of physical memory”):

1 Like