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Old 01-06-10, 11:15 PM   #233
Enigma2175
Registered User
 
Join Date: Jan 2010
Posts: 8
Default Re: VDPAU testing tool

Results for Sparkle 9400 GT PCI:
qvdpautest 0.5
AMD Athlon(tm) Processor
NVIDIA GPU GeForce 9400 GT (G96) at PCI:2:0:0 (GPU-0)

VDPAU API version : 1
VDPAU implementation : NVIDIA VDPAU Driver Shared Library 195.30 Fri Dec 18 14:22:27 PST 2009

SURFACE GET BITS: 88.276 M/s
SURFACE PUT BITS: 54.3193 M/s

MPEG DECODING (1920x1080): 57 frames/s
MPEG DECODING (1280x720): 135 frames/s
H264 DECODING (1920x1080): 44 frames/s
H264 DECODING (1280x720): 94 frames/s
VC1 DECODING (1440x1080): 64 frames/s
Profile unsupported.

MIXER WEAVE (1920x1080): 280 frames/s
MIXER BOB (1920x1080): 466 fields/s
MIXER TEMPORAL (1920x1080): 139 fields/s
MIXER TEMPORAL + IVTC (1920x1080): 99 fields/s
MIXER TEMPORAL + SKIP_CHROMA (1920x1080): 182 fields/s
MIXER TEMPORAL_SPATIAL (1920x1080): 73 fields/s
MIXER TEMPORAL_SPATIAL + IVTC (1920x1080): 58 fields/s
MIXER TEMPORAL_SPATIAL + SKIP_CHROMA (1920x1080): 84 fields/s
MIXER TEMPORAL_SPATIAL (720x576 video to 1920x1080 display): 244 fields/s

MULTITHREADED MPEG DECODING (1920x1080): 44 frames/s
MULTITHREADED MIXER TEMPORAL (1920x1080): 118 fields/s

This card will decode using VDPAU, but it is basically unusable because it gets constant pre-emption errors (at least within MythTV). Seeing all the reports of problems from people with Sparkle 9400 GTs both here and elsewhere leads me to believe that Sparkle royally messed up on this card. The only solution I have been able to find in my searching is "return it" which isn't really an option for me. Does anyone have any workarounds for using this card? Is underclocking the card likely to change the amount of errors I get or is it more likely that this is a problem with poor design that will not get better with new drivers or software? If anyone does have a Sparkle 9400 GT PCI card working with VDPAU is there anything special you did to configure it? Are the low scores for the get bits/put bits tests (I assume the low bandwidth of the PCI bus is causing this) likely to cause problems or should that be "fast enough"?
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