Older RX model GPU's

[MaynardMiner]

You seem like the man to ask this.

I made a linux profit switching miner (SWARM). It works well, but there seems to be a pattern that older RX model GPU's are failing to work with any sgminer. I am trying to determine the cause.

The failure occurs right at start, when the

* using Jansson 2.11 screen

line appears. It doesn't get past that line.

I am using generic start up settings:

export GPU_MAX_HEAP_SIZE=100

export GPU_USE_SYNC_OBJECTS=1

export GPU_SINGLE_ALLOC_PERCENT=100

export GPU_MAX_ALLOC_PERCENTAGE

Like I stated, it works great for most Ellesemere gpu's. It seems the older one's won't get past that screen. Like the older RX470 4GB is one I see it happening a lot.

Is there maybe a way for me to debug what is happening in background, to see the issue?

This isn't just your miner- It's all sgminers.

If I can code a fix in sgminer- I'm willing to do so, I just don't know where to start. There are some larger farms that want to use sgminers running older GPU's.

[fancyIX]

@MaynardMiner you can add "--debug --log-file log.txt" to see the log

[MaynardMiner]

Okay. It is working fine for me, so I will see if I can get the users having issues to add it, and see what it generates.

[fancyIX]

@MaynardMiner Note that sgminer compiles source code into bin file at the first time it runs. So if user's CPU it weak, it may take several minutes for compile to finish. You just need to wait for it. You can check the CPU usage to see if sgminer is using lots of CPU time, to see if it's compiling.

[MaynardMiner]

I am aware of that. I have had to crash course myself pretty hard in how sgminer works. I also know I could compile a debugging version, too I believe....But trying to do it vicariously through users and not directly is difficult.

I guess it's closing after 30 or seconds after it reaches the above line. It physically closes, like it doesn't even reach the part of building the binary, or it crashes before it actually outputs that it is starting the process.

[MaynardMiner]

User photo passed to me.

My miner changes the name of sgminer just before launching, but it is launching sgminer. (A trick I use to track running instances in linux)

[MaynardMiner]

Apparently it either hangs right there, or just closes.

[fancyIX]

@MaynardMiner If it happens for all sgminers distributed by you, probably you need to check if there is anything unusual in your distribution.

[MaynardMiner]

No. Most users state it works perfectly fine. I have a few users that state that all the sgminers don't work for them.

The two things they all have in common is that they are running older RX series cards in HiveOS (stable image). For everyone else it seems to work fine.

I know that screen shows nothing. I'm waiting for one of them to get me a debug log. I will post when they do.

I just posted here, because I thought maybe you might have heard/known something regarding older RX cards.

[MaynardMiner]

I am closing.

I will let you know if a user actually runs debug. I explained them how to do so, nobody has attempted.

It works fine for me.