I need to import a txt file (size: 2^N ; dimension: 1.4 GB) in Fortran and save it in an array: DATI. Starting from that, I have to generate a matrix with N columns equals to DATI: MATPAYOFF. In the specific case N=26 (reals are in double precision). I use Visual Studio 2013 on a 64-bit machine (Intel Xeon CPU E5-1650 v2 #3.50GHz, Ram: 24.0 GHz, Windows 10 Pro).
ALLOCATE(MATPAYOFF(1:2**N,1:N),DATI(1:2**N),VECPAYOFF(1:2**N))
CALL read_file(UNITA,'RandomData_N_'//TRIM(str(N))//'_file_'//TRIM(str(LAMBDA))//'.txt',2**N,1,DATI)
FORALL(j=1:N)
MATPAYOFF(:,j)=DATI
ENDFORALL
VECPAYOFF=(DATI-MINVAL(DATI))/(MAXVAL(DATI)-MINVAL(DATI))
During the allocate statement I get the following error: "forrtl: severe (179): Cannot allocate array - overflow on array size calculation" I tried to solve it imposing:
In the machine: the dimension of the paging file to 20000 MB.
In Visual Studio: Project/Propriety/ Fortran/ Optimization/Heap Arrays: 0.
In Visual Studio: Project/Propriety/ Fortran/ Command Line: /heap_arrays.
How may I solve this problem?
Related
Computer:
Processor: Intel Xeon Silver 4114 CPU # 2.19Ghz (2 processors)
Ram: 96 Gb 2666 Hz: 12 - 8 Gb sticks
OS: Windows 10
GPU: None
Hard drive: Samsung MZVLB512HAJQ-000H2 - 512GB M.2 PCIe NVMe
IDE:
Visual Studio 2019
I am including what I am doing in case it is relevant. I am running a visual studio code where I read data off a GSC PCI SIO4B Sync Card 256K. Using the API for this card (Documentation: http://www.generalstandards.com/downloads/GscApi.1.6.10.1.pdf) I read 150 bytes of data at a speed of 100Hz using the code below. That data is then being split into to the message structure my device. I can’t give info on the message structure but the data is then combined into the various words using a union and added to an integer array int Data[100];
Union Example:
union data_set{
unsigned int integer;
unsigned char input[2];
} word;
Example of how the data is read read:
PLX_PHYSICAL_MEM cpRxBuffer;
#define TEST_BUFFER_SIZE 0x400
//allocates memory for the buffer
cpRxBuffer.Size = TEST_BUFFER_SIZE;
status = GscAllocPhysicalMemory(BoardNum, &cpRxBuffer);
status = GscMapPhysicalMemory(BoardNum, &cpRxBuffer);
memset((unsigned char*)cpRxBuffer.UserAddr, 0xa5, sizeof(cpRxBuffer));
// start data reception:
status = GscSio4ChannelReceivePlxPhysData(BoardNum, iRxChannel, &cpRxBuffer, SetMaxBytes, &messageID);
// wait for Rx operation to complete
status = GscSio4ChannelWaitForTransfer(BoardNum, iRxChannel, 7000, messageID, &amount);
if (status)
{
// If we have an error, "bytesTransferred" will contain the number of bytes that we
// actually transmitted.
DisplayErrorMessage(status);
printf("\n\t%04X bytes out of %04X transferred", amount, SetMaxBytes);
}
My issue is that this code works fine and keeps up for around 5 minutes then randomly it stops being able to keep up and the FIFO (first in first out) register on the PCI card begins to fill up faster than the code can process the data. To me this seems like a memory leak issue since the code works fine for a long time, then starts to slow down when nothing has changed as all the code is doing it reading the data off the card. We used to save the data in a really large array but even after removing that we had the same issue.
I am unsure how to figure out exactly what is happening and I'm hopping for a way to determine if there is a memory leak and how to fix it if there is.
It being a data leak is only a guess though and it very well could be something else that is the problem so any out of the box suggestions for diagnosing the problem are also appreciated.
Similar to Paul's answer, but I like to strategically place two (or more) _CrtMemCheckpoint followed by _CrtMemDifference, to cut down the noise.
Memory leaks can be detected and reported on (in Debug builds) by calling the _CrtDumpMemoryLeaks function. When running under the debugger, this will tell you (in the output tab) how many allocations you have at the time that it is called and the file and line number that each was allocated from.
Call this right at the end of your program, after you (think you) have freed all the resources you use. Anything left over is a candidate for being a leak.
I have a swig generated C++ code file of 24MB, nearly 5,00,000 lines of code. I am able to compile it when set the compiler Optimization level to xO0,but fails as soon as i add any other C++ compiler flags(like xprofile ...). I am using Solaris Studio 12.3 C++ compiler.
Below is the console error:
Element size (in bytes): 48
Table size (in elements): 2560000
Table maximum size: 134217727
Table size increment: 5000
Bytes written to disk: 0
Expansions required: 9
Segments used: 1
Max Segments used: 1
Max Segment offset: 134217727
Segment offset size:: 27
Resizes made: 0
Copies due to expansions: 4
Reset requests: 0
Allocation requests: 2827527
Deallocation requests: 267537
Allocated element count: 4086
Free element count: 2555914
Unused element count: 0
Free list size (elements): 0
ir2hf: error: Out of memory
Thanks in Advance.
I found this article suggesting that it has to do with the fact that Solaris the amount of memory for data segments.
Following the steps in the blog, try to remove the limit.
$ usermod -K defaultpriv=basic,sys_resource karel
Now logoff and logon again and change the limit:
$ ulimit -d unlimited
Then check that the limit has changed
$ ulimit -d
The output should be unlimited
We are facing a memory fragmentation issue in our 32 bit app (C++ and WPF based). when we run it for 100 hrs. as part of automated test. Application crashes after running AST for ~14 hrs.
We use CRT heap with LFH policy (Low fragment Heap) exclusively enabled in Main(). Problem is coming on windows 10 platform. No issue on Windows 8 platform with same set of our application binaries. We completed 100 hrs. run for test in windows 8 platform.
We create a large block heap in Main() method and this heap we use for specific purpose when we need a large amount of memory and we are managing it in our code. From Virtual Memory Statistics logs we can see that initial virtual memory allocation is 1.79 GB.
After 14 hrs. of automated test run : on windows 10
Combined Available = 1590176752( 1516.511 MB)
Combined Max Available = 3989504( 3.805 MB)
Combined Frag Percent = 99.75%
CRT:sum_alloc = 2737569144(98.50%, 2610.749 MB)
CRT:max_alloc = 4458496( 4.252 MB)
CRT:allocAverageSize = 9043
CRT:num_free_blocks = 37813
CRT:sum_free = 22620888( 0.81%, 21.573 MB)
CRT:max_free = 514104( 0.490 MB)
VM:sum_free = 1581957120(36.83%,1508.672 MB)
VM:max_free = 10321920( 9.844 MB)
On windows 8 for 100 hrs.
Combined Available = 1881204960( 1794.057 MB)
Combined Max Available = 1734127616( 1653.793 MB)
Combined Frag Percent = 7.82%
VM:sum_free = 1845817344(42.98%,1760.309 MB)
VM:max_free = 1734127616( 1653.793 MB)
We are using ADPlus and (debugging tools for Windows, Windbg and DebugDiag) tool to collect memory dumps at interval of 3 hrs.
Is there any setting or flag which I need to enable or anything I have to do withy code, using VS2010.
Application is based on Windows 10 LTSB 64 bit (which is very specific Enterprise OS version for windows 10, gives stability and security)
I am trying to partition ~ 3 million mesh. My FORTRAN90 program calls following -
METIS_PartGraphKway(gp%ncv_ib,ncon,nbocv_i,nbocv_v,0,0, &
0,npart,tpwgts,ubvec,options,edgecut,part)
`ncon = 1, npart = 10
allocate(ubvec(ncon))
ubvec(:) = 1.01
allocate(tpwgts(ncon*npart))
tpwgts(:) = 1.0/REAL(npart)
options(:)= 0`
Earlier I was using Metis that comes with Parmet 3.0 and it was working fine. Now if I use metis 5.1, it gives me following error -
Current memory used: 392 bytes
Maximum memory used: 392 bytes
***Memory allocation failed for SetupCtrl: ctrl->tpwgts. Requested size: 10842907309714178088 bytes
Can someone please help? I am specifying IDXTYPEWIDTH 64 and REALTYPEWIDTH 64
Thanks much!
I'm usining Windows 7, 64bits, 8GB ram
I'm needing to make alloc more than 2GB but I'm getting runtime error
look at my piece of code
#define MAX_PESSOAS 30000000
int i;
double ** totalPessoas = new double *[MAX_PESSOAS];
for(i = 0; i < MAX_PESSOAS; i++)
totalPessoas[i] = new double [5];
MAX_PESSOAS is set to 30milion, but I'll need at least 1billion (ok, I know I'll need more than 8GB but nvm, I can get it, I only need to know how to do that )
I'm using visual studio 2012
If your application is building to a 64-bit binary, it can address more than 8 GB without any special steps.
If your application is building to a 32-bit binary, you can address up to 3 GB (or 4 GB if you're running 64-bit Windows) by enabling 4-gigabyte tuning, as long as the system supports it.
Your best bet is probably to compile your application as a 64-bit binary, if you know that the operating system it will be running on is 64-bit.