Alpha floating point problems?

nads@bleh.org
Sun, 20 Dec 1998 18:25:18 -0500


Hi,

I seem to be having problems playing mp3s in Linux on a alpha
(multia). I'm using rh 5.1 (w/errata patches) and kernel 2.0.35. I
couldn't get stock 2.0.35 to compile properly, so I applied patches for
2.0.35 that I found at
ftp://gatekeeper.dec.com/pub/Digital/Linux-Alpha/Kernels/.
After applying those patches, 2.0.35 compiled fine. I haven't been able
to compile 2.0.36 (stock, or patched from 2.0.35+dec_patches).

I get floating point exceptions on attempting to run any mp3 player

[root@alpha freeamp]# ./freeamp /greenday-time_of_your_life.mp3
Floating point exception
[root@alpha freeamp]#

[root@alpha amp-0.7.6]# ./amp /04-pretty_fly.mp3

amp 0.7.6, (C) Tomislav Uzelac 1996,1997
THIS PROGRAM COMES WITH ABSOLUTELY NO WARRANTY
PLEASE READ THE DOCUMENTATION FOR DETAILS

Playing: /04-pretty_fly.mp3

Properties: stereo 44100Hz
Coding Method: MPEG1.0 layer3
Bitrate: 160kbit/s
Floating point exception
[root@alpha amp-0.7.6]#

[root@alpha mpg123-0.59o]# ./mpg123 /04-pretty_fly.mp3
High Performance MPEG 1.0/2.0/2.5 Audio Player for Layer 1, 2 and 3.
Version 0.59o (1998/Feb/08). Written and copyrights by Michael Hipp.
Uses code from various people. See 'README' for more!
THIS SOFTWARE COMES WITH ABSOLUTELY NO WARRANTY! USE AT YOUR OWN RISK!

Directory: /
Playing MPEG stream from 04-pretty_fly.mp3 ...
MPEG 1.0 layer III, 160 kbit/s, 44100 Hz joint-stereo
Floating point exception
[root@alpha mpg123-0.59o]#

The following kernel messages popup also:

freeamp: arithmetic trap at 0000015555cffb38: 02 0000080200000000
amp: arithmetic trap at 000000012000c054: 02 0008020000000000
mpg123: arithmetic trap at 0000000120019584: 02 0000040000000000

Any help would be greatly appreciated.

-- Nadeem

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