ise调用Modelsim无波形输且出死机。安装后成功编译了各种库，而且也实现了它们的关联，第一次调用MOdelsim仿真时，一切正常。关机后，第二天再次调用时，Modelsim直接卡死没反应，重启电后可以成功调用，再重启后老毛病又出现。调用成功与否都没errors，但ISE都有warnings如下：
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../std
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../ieee
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../vital2000
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../verilog
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../std_developerskit
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../synopsys
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../modelsim_lib
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../sv_std
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../avm
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../ovm-2.1.2
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../uvm-1.1b
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../upf_lib
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../pa_lib
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../floatfixlib
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/../mc2_lib
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/..
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/libsm.sl
WARNING: unable to resolve env var in modelsim.ini file entry: $::env(MODEL_TECH)/libhm.sl
   Modelsim的warnings如下：
* Warning: (vsim-WLF-5000) WLF file currently in use: vsim.wlf
#
#           File in use by: lenovo  Hostname: LENOVO-THINK  ProcessID: 676
#
#           Attempting to use alternate WLF file "./wlft99qj37".
# ** Warning: (vsim-WLF-5001) Could not open WLF file: vsim.wlf
#
#           Using alternate file: ./wlft99qj37 此帖出自小平头技术问答