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Buy StrategyQuant Build 142

StrategyQuant Build 142
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gavindiaz said:
Has anyone encountered the situation where StrategyQuant automatically exits during operation? How can this be resolved? Thank you.
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Yes, this is a known situation that other StrategyQuant (SQX) users have encountered. It is typically caused by memory management issues (Java Heap Space), corrupted temporary files, or conflicts with system resource tools.

Here is a breakdown of the most common causes and how to resolve them.



1. Memory (RAM) Allocation Limits (Most Common)​



StrategyQuant is a Java-based application. If it hits the maximum memory limit allocated to it, the Java Virtual Machine (JVM) can crash, causing the software to disappear or exit instantly without a warning dialog.

  • The Fix:
    1. Open StrategyQuant.
    2. Go to Configuration (Gear Icon) -> Memory.
    3. Increase the Max Memory (RAM) setting. If your PC has 16GB, try allocating 12GB or 14GB to SQX.
    4. Restart StrategyQuant for the changes to take effect.
  • Note: If you are running massive optimizations (e.g., complex genetic evolution on huge populations), you might still hit the limit. Try reducing the "Population size" or "Databank capacity" in your project settings.


2. Check for "HS_ERR" Java Crash Logs​



When Java crashes hard, it often leaves a specific error file in the main installation folder (usually C:\StrategyQuantX).

  • The Fix: Look for a file named hs_err_pidXXXX.log (where XXXX is a number). Open this text file and search for "Out of Memory" or "Access Violation". This confirms if it is a RAM issue or a driver conflict.


3. Corrupted Temporary Files​



Sometimes, a previous crash leaves corrupted files in the temporary folders, which causes SQX to exit whenever it tries to read them.

  • The Fix:
    1. Close SQX.
    2. Navigate to your installation folder, e.g., C:\StrategyQuantX\user\tmp\.
    3. Delete the contents of the tmp folder (do not delete the folder itself, just the files inside).
    4. Also check C:\StrategyQuantX\user\log\ and clear old log files if the folder is excessively large.


4. StrategyQuant Watchdog / Check Service​



SQX has a built-in "watchdog" process designed to restart or close the app if it becomes unresponsive. Sometimes this service is too aggressive.

  • The Fix: Try starting the software using the StrategyQuantX_nocheck.exe file found in your installation folder instead of the standard .exe. This bypasses some of the internal health checks that might be triggering a premature exit.


5. Overheating (Laptops/High-Performance Settings)​



If the exit happens after a long period of heavy testing (e.g., 2-3 hours in), your CPU might be throttling or the system might be triggering a safety shutdown for the application process due to heat.

  • The Fix: Monitor your CPU temperatures. If you are on a laptop, ensure it is well-ventilated.


Summary Checklist to Resolve​



  1. Check Logs: Look at C:\StrategyQuantX\user\log\StrategyQuant\MainLog.log (or similar) for the last entry before the crash.
  2. Increase RAM: Allocate more memory in SQX settings.
  3. Clear Temp: Delete files in the user/tmp folder.
  4. Safe Mode: Try launching via StrategyQuantX_nocheck.exe.
 
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