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Huge psf file!! Cannot allocate memory

SPA1984

Hello,

I made an Ocean script to do a transient analysis. When I try to plot or export the waveforms the system gives me a message like "Cannot allocate mamory for the transition file". The psf file has a 56,6GB weigh.

I also try to save a txt file using the command ocnPrint, but when the simulation is done, the system gives me the same error.

Is there the possibility to generate several psf files? One for each waveform.

Is there any function to save the a txt file for each one of the 16 waveform on the fly? This way, the system doesn't have to handle this amount of memory.

I'm using Results Browser in ADEL  with aps simulator.

Thank you very much.

Parents

  • Hi,

    I'm using the version IC6.1.3.500.13. I'm running virtuoso in 32 bit mode, we don't have installed the 64 bit one.

    I have 16 waveforms for the 56 GB, some of them with a big amount of data points.

    Now I'm trying the psfxl format for the output, but the simulation will take 12 days aprox.

    I'll keep you informed.

    On the other hand, I'm trying to save the data points of each waveform (one txt file for each one) using a schematic test including a module with a VerilogA routine. This will save the data points on the fly or I will have the same problem as before? Trying to open the huge data file at the end of the simulation?

    This is the Veriloga routine, it's not finalized.

    `include "constants.vams"
    `include "disciplines.vams"

    module LatchDAC(ACK0, I0_I18_C0_0_T, I0_I18_casc, I0_I18_M10_S, I0_I18_vin, I0_I19_M4_D, I0_I19_vctrl, I0_I65_ovflw, I0_neg, I0_pos, I0_vint, in, net0224, OUTN, OUTP, REQ, save, gnd);
      input ACK0, I0_I18_C0_0_T, I0_I18_casc, I0_I18_M10_S, I0_I18_vin, I0_I19_M4_D, I0_I19_vctrl, I0_I65_ovflw, I0_neg, I0_pos, I0_vint, in, net0224, OUTN, OUTP, REQ, save, gnd;
      electrical ACK0, I0_I18_C0_0_T, I0_I18_casc, I0_I18_M10_S, I0_I18_vin, I0_I19_M4_D, I0_I19_vctrl, I0_I65_ovflw, I0_neg, I0_pos, I0_vint, in, net0224, OUTN, OUTP, REQ, save, gnd;

      integer multi_ch_desc1;

      analog begin
       @(initial_step) begin
        multi_ch_desc1 = $fopen("/scratch/Sergi_bySacris/DPS1.test/ACK0.txt");
      end
      
       @(cross(V(save)-0.9,1)) begin
        $strobe(multi_ch_desc1,"%e \t", $realtime(1ns)) ;
        $fwrite(multi_ch_desc1, "\t %g \n", V(ACK0));
       end //cross

       @(final_step) begin
        $fclose(multi_ch_desc1);
       end //final_step

      end//analog
     
    endmodule

    Many thanks,

    Sergi

Reply

  • Hi,

    I'm using the version IC6.1.3.500.13. I'm running virtuoso in 32 bit mode, we don't have installed the 64 bit one.

    I have 16 waveforms for the 56 GB, some of them with a big amount of data points.

    Now I'm trying the psfxl format for the output, but the simulation will take 12 days aprox.

    I'll keep you informed.

    On the other hand, I'm trying to save the data points of each waveform (one txt file for each one) using a schematic test including a module with a VerilogA routine. This will save the data points on the fly or I will have the same problem as before? Trying to open the huge data file at the end of the simulation?

    This is the Veriloga routine, it's not finalized.

    `include "constants.vams"
    `include "disciplines.vams"

    module LatchDAC(ACK0, I0_I18_C0_0_T, I0_I18_casc, I0_I18_M10_S, I0_I18_vin, I0_I19_M4_D, I0_I19_vctrl, I0_I65_ovflw, I0_neg, I0_pos, I0_vint, in, net0224, OUTN, OUTP, REQ, save, gnd);
      input ACK0, I0_I18_C0_0_T, I0_I18_casc, I0_I18_M10_S, I0_I18_vin, I0_I19_M4_D, I0_I19_vctrl, I0_I65_ovflw, I0_neg, I0_pos, I0_vint, in, net0224, OUTN, OUTP, REQ, save, gnd;
      electrical ACK0, I0_I18_C0_0_T, I0_I18_casc, I0_I18_M10_S, I0_I18_vin, I0_I19_M4_D, I0_I19_vctrl, I0_I65_ovflw, I0_neg, I0_pos, I0_vint, in, net0224, OUTN, OUTP, REQ, save, gnd;

      integer multi_ch_desc1;

      analog begin
       @(initial_step) begin
        multi_ch_desc1 = $fopen("/scratch/Sergi_bySacris/DPS1.test/ACK0.txt");
      end
      
       @(cross(V(save)-0.9,1)) begin
        $strobe(multi_ch_desc1,"%e \t", $realtime(1ns)) ;
        $fwrite(multi_ch_desc1, "\t %g \n", V(ACK0));
       end //cross

       @(final_step) begin
        $fclose(multi_ch_desc1);
       end //final_step

      end//analog
     
    endmodule

    Many thanks,

    Sergi

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