【开发环境】 irun(ncverilog)无法dump fsdb波形问题解决方法

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　　一、前言
　　本人使用IRUN仿真并通过调用$fsdbDumpfile函数生成波形时，IRUN无法识别$fsdbDumpfile函数。先总结解决方法如下，供大家参考。
　　二、问题
　　1. 在TestBeach中，调用以下函数生成fsdb波形文件；



//Enable dump fsdb
initial
begin
   $fsdbDumpfile("test.fsdb");
   $fsdbDumpvars(0,TB);
end
　　2. IRUN运行时出现如下错误：$fsdbDumpfile和$fsdbDumpvars 函数不能识别；



    Building instance overlay tables: .................... Done
Generating native compiled code:
worklib.HANDSHAKE_TB:v <0x45f2bf0a>
streams:   1, words:   554
Building instance specific data structures.
Loading native compiled code:     .................... Done
Design hierarchy summary:
Instances  Unique
Modules:                   2       2
Registers:                15      15
Scalar wires:              7       -
Always blocks:             7       7
Initial blocks:            5       5
Cont. assignments:         0       2
Simulation timescale:  100ps
Writing initial simulation snapshot: worklib.HANDSHAKE_TB:v
Loading snapshot worklib.HANDSHAKE_TB:v .................... Done
$fsdbDumpfile("test.fsdb");
|
ncsim: *E,MSSYSTF (./tb.v,75|14): User Defined system task or function ($fsdbDumpfile) registered during elaboration and used within the simulation has not been registered during simulation.
$fsdbDumpvars (0,TB);
|
ncsim: *E,MSSYSTF (./handshake_tb.v,76|14): User Defined system task or function ($fsdbDumpvars) registered during elaboration and used within the simulation has not been registered during simulation.
　　原因： irun未能正确加载debpli.so导致；
　　二、方法
　　1. 设置LD_LIBRARY_PATH如下：
　　其中NOVAS_HOME为VERDI安装目录，注意此处CentOS为32位系统，64位系统需要直到的目录；　　



#32bit CentOS
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$NOVAS_HOME/share/PLI/lib/LINUX:$NOVAS_HOME/share/PLI/IUS/LINUX/boot"


#64bit CentOS
export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$NOVAS_HOME/share/PLI/lib/LINUX64:$NOVAS_HOME/share/PLI/IUS/LINUX64/boot"
　　2. 设置IRUN运行参数如下：



irun -access +rwc -loadpli1 debpli:novas_pli_boot -f XXXXXXX.f
　　3.设置完成后可正常运行；



irun: 13.10-p001: (c) Copyright 1995-2013 Cadence Design Systems, Inc.
TOOL:    irun    13.10-p001: Started on Oct 31, 2016 at 10:44:07 EDT
irun
-loadpli1 debpli:novas_pli_boot
handshake_tb.v
handshake_pulse_sync.v
Caching library 'worklib' ....... Done
Elaborating the design hierarchy:
Top level design units:
HANDSHAKE_TB
Building instance overlay tables: .................... Done
Generating native compiled code:
worklib.HANDSHAKE_TB:v <0x0461d14c>
streams:   1, words:   554
Building instance specific data structures.
Loading native compiled code:     .................... Done
Design hierarchy summary:
Instances  Unique
Modules:                   2       2
Registers:                15      15
Scalar wires:              7       -
Always blocks:             7       7
Initial blocks:            5       5
Cont. assignments:         0       2
Simulation timescale:  100ps
Writing initial simulation snapshot: worklib.HANDSHAKE_TB:v
Loading snapshot worklib.HANDSHAKE_TB:v .................... Done
*Verdi3* Loading libsscore_ius131.so
*Verdi3* : Enable Parallel Dumping.
ncsim> source /usr/edatools/cadence/incisive/tools/inca/files/ncsimrc
ncsim> run
FSDB Dumper for IUS, Release Verdi3_I-2014.03, Linux, 02/10/2014
(C) 1996 - 2014 by Synopsys, Inc.
*Verdi3* : Create FSDB file 'test.fsdb'
*Verdi3* : Begin traversing the scope (HANDSHAKE_TB), layer (0).