CPU exception

From: ABDON TREMOLS <abdon.t_at_usa.net>
Date: Mon, 14 Sep 1998 08:24:59 -0600 (MDT)

Hello,

We have an Alpha 4100, 2GB RAM ( a single RAM module ), RA7000 and DU 4.0d.
We are having CPU execptions and we think that those errors are
coming from memory ( so far error corrected ), no panic so far. Below is dia
output.

Any comments will appreciated,

TIA,
Abdon

******************************** ENTRY 2 ********************************


Logging OS 2. Digital UNIX
System Architecture 2. Alpha
Event sequence number 6.
Timestamp of occurrence 11-SEP-1998 17:42:31
Host name alpha1

System type register x00000016 AlphaServer 4000 Series
Number of CPUs (mpnum) x00000002
CPU logging event (mperr) x00000000

Event validity 1. O/S claims event is valid
Event severity 5. Low Priority
Entry type 100. CPU Machine Check Errors

CPU Minor class 4. 620 System Correctable Error

Software Flags x0000000000000000
Active CPUs x00000003
Hardware Rev x00000000
System Serial Number NI6430492T
Module Serial Number
Module Type x0000
System Revision x00000000

Machine Check Reason x0204 IOD Detected Soft Error

Ext Interface Status Reg x0000000000000000
                                     Register Contents Not Valid For This
Error
Ext Interface Address Reg x0000000000000000
                                     Register Contents Not Valid For This
Error
Fill Syndrome Reg x0000000000000000
                                     Register Contents Not Valid For This
Error
Interrupt Summary Reg x0000000000000000
                                     Register Contents Not Valid For This
Error
WHOAMI x00000000 Register Contents Not Valid For This
Error
                                       
--IOD REGISTERS FOLLOW--
Base Addr of Bridge x000000F9E0000000
Dev Type & Rev Register x06008331 CAP Chip Revision: x00000001
                                     HORSE Module Revision: x00000003
                                     SADDLE Module Revision: x00000003
                                     SADDLE Module Type: Left Hand
                                     PCI-EISA Bus Bridge Present on PCI
Segment
                                     PCI Class Code x00000600
MC Error Info Register 0 x6DF1E800
                                     MC Bus Trans Addr<31:4>: 6DF1E800
MC Error Info Register 1 x800E8A00 MC bus trans addr <39:32> x00000000
                                     MC Command is ReadMod0-Mem
                                     CPU0 Master at Time of Error
                                     Device ID: x00000002
                                     MC error info valid
CAP Error Register x90000000 Correctable ECC err det by MDPB
                                     MC error info latched
MDPA Status Register x00000000 MDPA Status Register Data Not Valid
MDPA Error Syndrome Reg x00000000 MDPA Syndrome Register Data Not Valid
MDPB Status Register x00000000 MDPB Status Register Data Not Valid
MDPB Error Syndrome Reg x00000000 MDPB Syndrome Register Data Not Valid
                                       
PALcode Revision Palcode Rev: 1.21-3

******************************** ENTRY 3 ********************************


Logging OS 2. Digital UNIX
System Architecture 2. Alpha
Event sequence number 5.
Timestamp of occurrence 11-SEP-1998 17:42:31
Host name alpha1

System type register x00000016 AlphaServer 4000 Series
Number of CPUs (mpnum) x00000002
CPU logging event (mperr) x00000000

Event validity 1. O/S claims event is valid
Event severity 5. Low Priority
Entry type 100. CPU Machine Check Errors

CPU Minor class 4. 620 System Correctable Error

Software Flags x0000000000000000
Active CPUs x00000003
Hardware Rev x00000000
System Serial Number NI6430492T
Module Serial Number
Module Type x0000
System Revision x00000000

Machine Check Reason x0086 Alpha Chip Detected ECC Error, From
Memory

Ext Interface Status Reg xFFFFFFF0C5FFFFFF
                                     DATA SOURCE IS MEMORY OR SYSTEM
                                     CORRECTABLE ECC ERROR
                                     D-ref fill
                                     EV5 Chip Rev 5
Ext Interface Address Reg xFFFFFF006DF1E81F
Fill Syndrome Reg x000000000000E600
Interrupt Summary Reg x0000000100000000
                                     Correctable ECC Errors (IPL31)
                                     AST Requests 3-0: x0000000000000000
                                       
WHOAMI x00000000 CPU0 Detected This Error
                                       
--IOD REGISTERS FOLLOW--
Base Addr of Bridge x0000000000000000
                                     Register Contents Not Valid For This
Error
Dev Type & Rev Register x00000000 Register Contents Not Valid For This
Error
MC Error Info Register 0 x00000000 Register Contents Not Valid For This
Error
MC Error Info Register 1 x00000000 Register Contents Not Valid For This
Error
CAP Error Register x00000000 Register Contents Not Valid For This
Error
MDPA Status Register x00000000 MDPA Status Register Data Not Valid
MDPA Error Syndrome Reg x00000000 MDPA Syndrome Register Data Not Valid
MDPB Status Register x00000000 MDPB Status Register Data Not Valid
MDPB Error Syndrome Reg x00000000 MDPB Syndrome Register Data Not Valid
                                       
PALcode Revision Palcode Rev: 1.21-3


******************************** ENTRY 4 ********************************




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Received on Mon Sep 14 1998 - 14:26:02 NZST

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