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Update memory check: 

Only for WINDOWS baile out if requested memory is larger than existing.
For other OSs issue a warning, but then move on.
This commit is contained in:
Holger Vogt 2026-04-28 11:50:46 +02:00
parent 2c461c4441
commit 7cf526ce4c
1 changed files with 22 additions and 7 deletions
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29
src/frontend/outitf.c
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@ -38,6 +38,8 @@ extern int EVTsetup_plot(CKTcircuit* ckt, char* plotname);
extern IFsimulator SIMinfo;
extern char Spice_Build_Date[];
extern char* eng(double value, int digits, bool numeric, bool bytes);
extern unsigned long long getMemorySize(void);
extern unsigned long long getPeakRSS(void);
extern unsigned long long getCurrentRSS(void);
@ -126,23 +128,36 @@ OUTpBeginPlot(CKTcircuit *circuitPtr, JOB *analysisPtr,
plot = *plotPtr;
n = plot->numData;
#ifndef __APPLE__
if (!cp_getvar("no_mem_check", CP_BOOL, NULL, 0)) {
/* Estimate the required memory */
int timesteps = vlength2delta(0);
int timesteps = ft_curckt->ci_ckt->CKTtimeListSize;
size_t memrequ = (size_t)n * timesteps * sizeof(double);
size_t memavail = getAvailableMemorySize();
double dmemrequ = (double)memrequ;
double dmemavail = (double)memavail;
char *cmemrequ = eng(dmemrequ, 9, FALSE, TRUE);
char *cmemavail = eng(dmemavail, 9, FALSE, TRUE);
if (memrequ > memavail) {
fprintf(stderr, "\nError: memory required (%zu Bytes), made of\n"
#ifdef _WIN32
fprintf(stderr, "\nError: memory required (%sB), made of\n"
" %d nodes and approximately %d time steps,\n"
" is more than the memory available (%zu Bytes)!\n",
memrequ, n, timesteps, memavail);
" is more than the memory available (%sB)!\n",
cmemrequ, n, timesteps, cmemavail);
fprintf(stderr, "Setting the output memory is not possible.\n");
tfree(cmemrequ);
tfree(cmemavail);
controlled_exit(1);
#else
fprintf(stderr, "\nWarning: memory required (%sB), made of\n"
" %d nodes and approximately %d time steps,\n"
" is more than the DRAM memory available (%sB)!\n",
cmemrequ, n, timesteps, cmemavail);
fprintf(stderr, "Swapping data to SSD may slow down the simulation.\n");
tfree(cmemrequ);
tfree(cmemavail);
#endif
}
}
#endif
return ret;
}