Multicore Memory Tests
Multicore memory tests test the first 2.5 GB of memory using all available CPU cores.
In AXD EFI tools, all memory tests (simple, multicore, and extended) are grouped under
Memory tests.
Note: The time required to complete memory tests correlates to the size of memory
being tested. These estimates are based on testing 1 GB of memory.
Test
Estimated completion time
Description
MP Block Checkerboard 32
5 seconds
Alternates 32-bit words with all
1s and all 0s, and then with all
0s and all 1s.
MP Bit Checkerboard 32
5 seconds
Alternates bits with all 1s and
all 0s, and then with all 0s and
all 1s.
MP Sequential Byte Block 32
8 minutes
Fills all bytes sequentially with
patterns starting at 0x00 and
ending at 0xFF.
MP Walking One 32
2 minutes
Walks 1s up and down memory.
MP Walking Zero 32
2 minutes
Walks 0s up and down memory.
MP Walking Spread Bit 32
2 minutes
Walks 0b01 up and then walks
0b10 down memory.
MP Walking Bit Flip 32
2 minutes
Alternates words with walking
1 and walking 0, and then
alternates words with walking 0
and walking 1.
Check Hardware Errors
1 second
Tests specific registers for
memory related errors. Running
this test at the end of memory
testing may help catch memory
errors generated during other
memory tests.
Appendix
AXD Tools Test Reference
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