Bug 94525

Summary:	OpenCL memory allocation is limited to 1GB
Product:	Mesa	Reporter:	Benjamin Bellec <b.bellec>
Component:	Drivers/Gallium/radeonsi	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:	Default DRI bug account <dri-devel>
Severity:	normal
Priority:	medium	CC:	b.bellec
Version:	git
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Bug Depends on:
Bug Blocks:	99553

Description Benjamin Bellec 2016-03-13 20:29:36 UTC

I wanted to try "ethminer" (the OpenCL Ethereum miner) on Mesa.
I installed Ubuntu 15.10 (x86-64), the "ethminer" client, and the Oibaf PPA Mesa packages.

The OpenCL's Mesa detects only 1GB on my Radeon R9 390 8GB.
So I can't even start "ethminer" since it currently requires 1.4 GB.

Moreover, the two others R9 Nano plugged in the computer are not even detected by "ethminer" nor "clinfo".

Comment 1 Vedran Miletić 2017-03-22 15:54:55 UTC

Should have been fixed by:

commit 8a4ace4a47a07323997da5c2dbc865a32df52451
Author: Marek Olšák <marek.olsak@amd.com>
Date:   Fri Jul 1 00:17:36 2016 +0200

    gallium/radeon: add and use radeon_info::max_alloc_size (v2)
    
    v2: - squashed the patches
        - use INT_MAX
        - clamp max_const_buffer_size
        - check the DRM version in radeon
    
    Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
    Reviewed-by: Vedran Miletić <vedran@miletic.net>

If it's still an issue, please reopen.

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