Memory Cleanup

From HPCBugBase

Contents 1 Defect Type Description 2 Entries 3 Advice 4 Symptom 5 Other Findings and Contexts

[edit] Defect Type Description

This defect type is intended to cover defects associated with a failure to cleanup memory properly. It is currently classified as a sub-type of the Memory Management defect type.

By "memory cleanup", we mainly refer to two different situations.

• In typical HPC applications, the same memory buffer is repeatedly read and written in the main loop. If the "garbage" from the previous loop is not cleaned up properly, it can cause unexpected problems.
• If the application allocates memory and does not release it properly, it can eventually lead to an out-of-memory failure. (It is often called a "memory leak".)

While these defects are not unique to HPC applications, they are more likely to show up in the HPC domain because of the typical size of the buffer used and the scale of the HPC problems. Also, these defect types may not seen until the application is run on a certain number of processors.

[edit] Entries

[edit] Advice

[edit] Symptom

[edit] Other Findings and Contexts