Hawaii (r9 390 with 4gb memory) shows only 3072mb. why?

Question

i'm on ubuntu 16.04 with radeon r9 390 3x with 4gb of memory. Ubuntu sees only 3072mb. why? thanks

update:

i'm using ubuntu for mining using claymore software. and claymore was saying that i have 3gb instead of 4gb and it wasnt running.

run memtest - https://askubuntu.com/questions/591488/how-do-i-run-memtest86/591502 you running 32 bit ? — Panther, Sep 15 '17 at 19:03
run sudo lshw -C memory, dmesg, journalctl -b, and reboot into memtest86+ — waltinator, Sep 15 '17 at 20:29
How did you test for errors ? I would open the case and test one stick at a time see if one if faulty or mislabeled. — Panther, Sep 15 '17 at 20:31
i found the problem. issue was app specific. i used export GPU_FORCE_64BIT_PTR=0 and it worked well — aleXela, Sep 15 '17 at 20:48

score 1 · Answer 1 · answered Sep 15 '17 at 22:10

i found solution for my problem using set values in script before running the application:

this is the solution 1 instead of 0

export GPU_FORCE_64BIT_PTR=1


export GPU_MAX_HEAP_SIZE=100
export GPU_USE_SYNC_OBJECTS=1
export GPU_MAX_ALLOC_PERCENT=100
export GPU_SINGLE_ALLOC_PERCENT=100
./ethdcrminer64 -epool eth-asia1.nanopool.org:9999 -ewal ....

Hawaii (r9 390 with 4gb memory) shows only 3072mb. why?

1 Answers1