问答 #33422 - ISE Simulator (ISim) - Error "tracing limit is reached. Signal tracing will stop!"
ISE Simulator (ISim) - Error "tracing limit is reached. Signal tracing will stop!"
| 问答编号# | 33422 |
| 型号 | SW-ISE Simulator |
| 最后更新日期 | 2009-11-17 00:00:00.0 |
| 记录状态 | Active |
| 关键词 | Tracing Limit |
疑问描述
Keywords: Tracing Limit
I am able to launch a simulation of my design using ISim. However, after it has run for some time, I encounter the following error:
"tracing limit is reached. Signal tracing will stop!"
What is a "tracing limit" and how can I resolve this issue?
解决方案 1
This is a known issue with ISim in ISE Design Suite 11 tools and it has been fixed in ISE Design Suite 11 Update 4 (11.4) . Please download and install the latest ISE Design Suite update from the Download Center at: http://www.xilinx.com/support/download/index.htm.解决方案 2
A "tracing limit" is a limit on the total number of transitions that can be stored in the waveform database (wdb) file for viewing in the waveform viewer based on the available system memory. This error can occur when the simulator is unable to allocate enough memory to store a large number of transitions occurring in a simulation.To resolve this issue, you can do one of two things:
- Install the latest ISE Design Suite 11 Update. Running the latest version of the simulator offers enhanced memory usage, allowing for simulations to run longer with a larger number of waveform transitions.
- Add to the Wave window only the signals that are relevant to the verification process. For example, not all top level signals are of interest in a given simulation session. Removing traced signals from the Wave window results in less memory consumption, allowing the simulator to simulate to completion without issuing the error.