* assert adequate memory has been freed
* cleaned up runtime error message
* improved metal buffer alloc error catching and reporting
* decreased lines and altered messages
* removed unnecessary _get_cur_free_space() call
* improved assert message
* added allocate massive buffer test
* added test_lru_allocator_metal_max_buffer_length
* split into two asserts and removed walrus assignment from assert expression
* update assert message and use byte data type for clarity
* For cuda get current free space from device, and rery alloc failures
* type ignore for mypy
* add init to get free mem in cuda
* Move retry logic in common lib.
Fix typo in override _get_cur_free_space
* linter error fix in test file
* Not catch all, as it will catch KeyboardInterrupt
* fix unintened line changes
