CSC/ECE 506 Fall 2007/wiki 2 5 2281

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Objective

To create a table having details of the current multi-core acrchitecture processors and their internal cache specifications.

Cache Sizes in multicore architectures

Below is a table containing details of the current multi-core processor architectures along with their intricate details like number of levels, cache size, etc.

Multi-core Architecture Number of levels Line Size Cache Size Associativity Latency Is the Level shared Coherence Protocol used
AMD Opteron Processor 2 - 64 Byte L1 Cache - Data and Instruction Cache Separated, 1024 KByte L2 2 Way Associative ECC Protected L1 Data Cache & Parity Protected Instruction Cache;
16 Way Associative Parity Protected L2 Cache
Two 64 bit operations per 3 cycle latency No Exclusive cache architecture
AMD Athlon X2 Dual Core 2 - 64 Byte L1 Cache - Data and Instruction Cache Separated, 1024 KByte L2 2 Way Associative ECC Protected L1 Data Cache & Parity Protected Instruction Cache;
16 Way Associative Parity Protected L2 Cache
Two 64 bit operations per 3 cycle latency No Exclusive cache architecture
AMD Turin 64 Mobile 2 - 64 Kbyte L1; Upto 1MByte of L2 with 512 Kbyte Options 2-Way Associative ECC-Protected L1 Data Cache & Parity Protected L1 Instruction Cache;
16-Way Associative ECC-Protected L2 Cache
Two 64-bit operations per cycle, 3-cycle latency - With advanced branch prediction No Exclusive cache architecture—storage
AMD Sempron Processor 2 - 64-Kbyte ECC-Protected L1 Data Cache && Parity-Protected Instruction Cache;
256-Kbyte ECC-Protected

L2 Cache

2-Way Associative L1 Cache ; 16-Way Associative L2 Cache Two 64-bit operations per cycle, 3-cycle latency No Exclusive cache architecture—storage
AMD Athlon Duron Processor 2 - Integrated 128-Kbyte L1 Cache and an exclusive 64-Kbyte L2 Cache - - No Exclsive cache architecture-storage
AMD Palemo Processor 2 - 64 KByte L1 Data Cache & L1 Instruction Cache;
Unified 128 or 256 KByte L2 Cache
- - No Inclusive
AMD Thoroughbred (TBRED) 2 - 64 KByte L1 Data Cache & L1 Instruction Cache;
Unified 256 KByte full-speed L2 Cache
- - No Inclusive
AMD Barton Processor 2 - 64 KByte L1 Data Cache & L1 Instruction Cache;
Unified 512 KByte L2 Cache
- - No -
AMD Thunderbird 2 - - 16-Way - - -
CELL Processor (Playstation3 Processor) Manufactured by TOSHIBA, IBM and SONY Power PC Core, which is at the centre of the Cell, contains 2 Levels ;
Each of the "surrounding" SPEs have just one level of Cache
- 32 KByte Data Cache + 32 Kbyte Instruction Cache in the Power PC Core ;
The surrounding SPEs have 256 Kbyte Unified Cache
- - The L2 Cache of the Power PC Core is shared by the surrounding SPEs -
AMD Athlon 64 X2 Dual Core - 4600+ 2 - 128 KByte L1 Unified Cache ; 512 KByte L2 Unified Cache - - No -
Storm-1 Family by Stream Processors 1 - 16 KByte L1 Data / Instruction Cache - 533 MHz Data Rate between L1 and DDR Memory No NA
UltraSPARC IV 2 128 bytes to 512 bytes 64KByte Dual L1 Data Cache; 32KByte L2 extendable up to 16MB 2way set associative per core - No -
UltraSPARC IV+ 2 - 32 MByte L2 on-chip ; 32 MByte L3 External - - No -
UlatraSPARC T1 2 4 Banks for L2 8 KByte Data Cache ; 16 KByte Instruction Cache;
3 MByte L2 Cache
4-Way Set Associative for L1 ; 12-Way Set Associative for L2 Cache - No -
Intel Pentium D Series 3 (L1 + L2 + Execution Trace cache holding the decoded Micro-Ops) - 2 * 16 KByte of L1 Data Cache;
2 * 2 MByte L2 Unified Cache
- - Yes -
Intel Itanium 2 3 - 16 KByte L1 Instruction Cache ; 16 KByte L1 Data Cache; 265 KByte L2 Unified Cache; 3 - 9 MByte of L3 Unified Cache 4-Way Set Associative L1 Cache ; 8-Way Set Associative L2 Cache 6.4 - 2.1 GB/s transfer rate between L3 and External Memory L2 and L3 Cache is Shared -
CRAY X1 2 - 32 KByte Core L1 Unified Cache; 512 MByte of L2 Unified Cache - 76 GB/s - 50 GB/s for Loads and 26 GB/s for stores between the L2 Cache and the Memory Yes Integrated Vector Cache is used for Coherence and helps tolerate memory latency

References

http://www.interfacebus.com/Controllers.html
http://www-03.ibm.com/servers/eserver/opteron/pdf/IBM_dualcore_whitepaper.pdf
http://arstechnica.com/news.ars/post/20061102-8135.html
http://compreviews.about.com/od/cpus/a/dualcore.htm
http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2343
http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118,00.html
http://www.interfacebus.com/Controllers.html
http://www.broadcom.com/
http://www.via.com.tw/en/products/processors/eden/
http://www.centtech.com/
http://www.ibm.com/us/en/
http://www.streamprocessors.com/
http://www.streamprocessors.com/streamprocessors/resources/
http://www.netlib.org/utk/papers/advanced-computers/