使用VCS进行仿真，生成不了vcd波形文件

陆宝毅

我使用的linux版本是centos 7，DVE版本是2016.6，scl版本为11.9，gcc版本为4.8.5。首先生成了三个文件clk_half.v、counter.v、counter_testbench.v具体代码如下：

module clk_half(
    clk_in
    ,rst
    ,clk_out
    );
input clk_in;
input rst;
output reg clk_out;

always @(posedge clk_in or posedge rst) begin
    if (rst) begin
        // reset
        clk_out <= 0;
    end
    else begin
        clk_out <= !clk_out;
    end
end
endmodule
module counter ( out, clk, reset ) ;
input clk, reset;
output [3:0] out;
reg [3:0] out;

always @(posedge clk or posedge reset) begin
    if (reset) begin
        // reset
        out <= 4'b0;
    end
    else begin
        out <= out + 1'b1;
    end
end

wire clk_out;
clk_half uu1(
    .clk_in(clk)
    ,.rst(reset)
    ,.clk_out(clk_out)
    );

endmodule

module counter_testbench () ;
wire [3:0] out;
reg clk;
reg reset;

counter u0 (
    .out (out[3:0]),
    .reset (reset),
    .clk (clk)
    );

initial begin
    clk = 1'b0;
    forever #10 clk = ~clk;
    end

initial begin
    reset = 1'b0;
    #4 reset = 1'b1;
    #4 reset = 1'b0;
end

initial begin
    $dumpfile("counter.vcd");
    $dumpvars(0,u0);
end

initial #1000 $finish;
endmodule

在linux下载入运行环境之后使用命令vcs clk_half.v counter.v counter_testbench.v
生成文件夹：csrc、simv.daidir以及可执行文件simv
终端返回：
*----------------------------------------------*
[lubaoyi@tteda pre_sim]$ vcs clk_half.v counter.v counter_testbench.v
                         Chronologic VCS (TM)
            Version L-2016.06 -- Mon May 11 13:44:54 2020
               Copyright (c) 1991-2016 by Synopsys Inc.
                         ALL RIGHTS RESERVED

This program is proprietary and confidential information of Synopsys Inc.
and may be used and disclosed only as authorized in a license agreement
controlling such use and disclosure.

Parsing design file 'clk_half.v'
Parsing design file 'counter.v'
Parsing design file 'counter_testbench.v'
Top Level Modules:
       counter_testbench
No TimeScale specified
Starting vcs inline pass...
2 unique modules to generate
2 modules and 0 UDP read.
recompiling module counter
recompiling module counter_testbench
All of 2 modules done
rm -f _csrc*.so pre_vcsobj_*.so share_vcsobj_*.so
if [ -x ../simv ]; then chmod -x ../simv; fi
g++  -o ../simv   -Wl,-rpath-link=./ -Wl,-rpath='$ORIGIN'/simv.daidir/ -Wl,-rpath=./simv.daidir/ -Wl,-rpath='$ORIGIN'/simv.daidir//scsim.db.dir  -m32 -m32 -rdynamic   amcQwB.o objs/amcQw_d.o   _12055_archive_1.so  SIM_l.o       rmapats_mop.o rmapats.o rmar.o  rmar_llvm_0_1.o rmar_llvm_0_0.o          /eda/s/vcs-mx/L-2016.06/linux/lib/libzerosoft_rt_stubs.so /eda/s/vcs-mx/L-2016.06/linux/lib/libvirsim.so /eda/s/vcs-mx/L-2016.06/linux/lib/liberrorinf.so /eda/s/vcs-mx/L-2016.06/linux/lib/libsnpsmalloc.so    /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so /eda/s/vcs-mx/L-2016.06/linux/lib/libsimprofile.so /eda/s/vcs-mx/L-2016.06/linux/lib/libuclinative.so   -Wl,-whole-archive /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsucli.so -Wl,-no-whole-archive          /eda/s/vcs-mx/L-2016.06/linux/lib/vcs_save_restore_new.o /eda/s/vcs-mx/L-2016.06/linux/lib/ctype-stubs_32.a -ldl  -lc -lm -lpthread -ldl
../simv up to date
CPU time: .143 seconds to compile + .276 seconds to elab + .105 seconds to link

*------------------------------------------*
然后运行./simv
生成ucli.key文件,该文件为空
终端返回信息如下：
*------------------------------------------*
Command line: ./simv

--- Stack trace follows:

Dumping VCS Annotated Stack:
#0  0xf7705430 in __kernel_vsyscall ()
#1  0xf29bf1cb in waitpid () from /lib/libc.so.6
#2  0xf293face in do_system () from /lib/libc.so.6
#3  0xf293fed5 in system () from /lib/libc.so.6
#4  0xf2c08e2b in system () from /lib/libpthread.so.0
#5  0xf71ad3ac in SNPSle_10ee25eff68cd8461c9146fa1d0b35e87067f3c8015b313e639d2928478c79b3f673f99203bcf8be64600612100082236bffb2007f1e0ef9 () from /eda/s/vcs-mx/L-2016.06/linux/lib/liberrorinf.so
#6  0xf71ae83c in SNPSle_10ee25eff68cd8461c9146fa1d0b35e87067f3c8015b313efba706aab251478fa49e66610e453774633a6c152e7ef778f2202cda681f3d4e () from /eda/s/vcs-mx/L-2016.06/linux/lib/liberrorinf.so
#7  0xf71a6fe1 in SNPSle_d35ca1ff70d465c2b9b1a72eee90a506fdd009d3de3db1de () from /eda/s/vcs-mx/L-2016.06/linux/lib/liberrorinf.so
#8  0xf4f8cb70 in SNPSle_64133461705005bb725549e2e6fa1b3f () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#9  0xf4e08365 in SNPSle_82244d58c54c18c70d63edc9becab634 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#11 0xf717190d in mem_free () from /eda/s/vcs-mx/L-2016.06/linux/lib/libsnpsmalloc.so
#12 0xf715c406 in snpsFreeFunc () from /eda/s/vcs-mx/L-2016.06/linux/lib/libsnpsmalloc.so
#13 0xf4c1f171 in SNPSle_77e776236473f4bc83d28b2811172395 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#14 0xf4c19d4d in SNPSle_4e2b4bf1677349c165275718f4085a72 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#15 0xf4ac9cec in SNPSle_e08561af70b15158c1effee38014f2e6 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#16 0xf4ac9e43 in SNPSle_6a600e65c1e59889d2167a3056e08869 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#17 0xf4ac9ea3 in SNPSle_79019f86c02f3a7a4fc861b56b22e07a449f142e33a64a009cd88060dca82713b97bc310751f5b0c () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#18 0xf2c00b3c in start_thread () from /lib/libpthread.so.0
#19 0xf29ff44e in clone () from /lib/libc.so.6
#0  0xf7705430 in __kernel_vsyscall ()
#1  0xf29bf676 in nanosleep () from /lib/libc.so.6
#2  0xf29bf44d in sleep () from /lib/libc.so.6
#3  0xf4a4cc27 in SNPSle_95ae9cc2e78cc668673c60b8d88c4908 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#4  0xf4a4cdea in SNPSle_92de4d0d4cf0d6931bc37e8d42a01d93 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#5  0xf4a4b4e6 in SNPSle_b76ef993ee82b3d58a5cadddbec8b67c () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#6  0xf4a4b7ee in SNPSle_f28f24b8c84ac8f6e02e0b03bcd33aa8 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#7  0xf4a172b0 in SNPSle_b02289328df49303de0a4a986839ba718c1b162de585ec41 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#8  0xf4a17ee5 in SNPSle_b02289328df493035a8cfe7a2a96e3f1 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#9  0xf4a19ea1 in SNPSle_7309f02bf869c35a32837a6e487da0db () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#10 0xf4a1ab41 in SNPSle_b02289328df493035a8cfe7a2a96e3f14356a2494eb82428 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#11 0xf4a1c12d in SNPSle_b02289328df493035a8cfe7a2a96e3f105a2510afcb822b0f2351f16fde66779 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#12 0xf4a1ca7a in SNPSle_ba11b1edbd04051f5bb81b1861cdf84a () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#13 0xf4a089af in SNPSle_2e65c0794628fc5af60953149776c29b () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#14 0xf49feed6 in SNPSle_541f757be362289a7c9e5618c0ff28327846f8d3cc02839f () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#15 0xf49fe001 in SNPSle_541f757be362289a7c9e5618c0ff283244765933a2ab0071 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#16 0xf49f7644 in SNPSle_c0de1345d5ab80930e06dd2b68f214c3 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#17 0xf49f8883 in SNPSle_25cd5712eacded5feaee03dc3430943e () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#18 0xf4fa585b in SNPSle_490598bfebcc8e8183ad3550288b1f82 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#19 0xf4fb1178 in SNPSle_490598bfebcc8e81 () from /eda/s/vcs-mx/L-2016.06/linux/lib/libvcsnew.so
#20 0x0804ce53 in main ()
No context available

*-------------------------------------------------*
并未生成波形文件，请问是那个环节出错了呢

courageheart

你确定dumpon？你的代码或者vcs命令并没有设置dumpon。

杨遮19

courageheart 发表于 2020-5-11 16:57
你确定dumpon？你的代码或者vcs命令并没有设置dumpon。

同问，这个问题怎么解决？

Liang_Xiaoqian

在tb文件里加入：$fsdbDumplife 和$fsdbDumpvars

走进内心

你的指令不对，vcs -full64(如果是32位系统可以不写) *.v  -debug_pp

陆宝毅

走进内心 发表于 2021-5-17 09:49
你的指令不对，vcs -full64(如果是32位系统可以不写) *.v  -debug_pp

指令是对的，是环境没有配对

ahzhangyq

陆宝毅 发表于 2021-5-17 10:00
指令是对的，是环境没有配对

你好，我也遇到这种情况了，你怎么解决的？ 麻烦详细点，谢谢！

陆宝毅

重新配置了下feature就能够正常使用了

ahzhangyq

陆宝毅 发表于 2021-9-11 13:55
重新配置了下feature就能够正常使用了

额，小白一个，实在不懂啊
能具体点吗？

ahzhangyq

陆宝毅 发表于 2021-9-11 13:55
重新配置了下feature就能够正常使用了

以前能仿真生成波形未见，不知道动了哪里的文件，现在就不行了