The .dmp file extension is related to the PDP-10 mainframe computer. The .dmp file contains uncompressed core dump.
DMP file extension - PDP-10 uncompressed core dump
What is dmp file? How to open dmp files?
File type specification:
The DMP file extension is associated with the PDP-10 (Programmed Data Processor model 10) a mainframe computer developed by the Digital Equipment Corporation (DEC) in late 1960s. The .dmp file stores uncompressed core dump.