https://wccftech.com/amd-zeppelin-soc-isscc-detailed-7nm-epyc-64-cores-rumor/AMD 7nm EPYC “Rome” Rumor – Two Different Dies, Up To 64 Cores Could Be Possible
Now on to some interesting bits straight from the rumor mill in China. There are reports about the AMD 7nm EPYC family. Codenamed “Rome”, the upcoming generation of EPYC processors could have up to 64 cores and 128 threads if rumors are to be believed. The rumor alleges that AMD’s 7 nm EPYC chip will actually be based on two different dies.
Die1: Single CCX 6 core, each Die 12 core, single CPU maximum 48 core
Die2: Single CCX 8 core, each Die 16 core, single CPU maximum 64 core
The first die will include six Zen 2 cores per core complex making up for 12 cores per Zeppelin die. Considering AMD is using the same LGA 4094 socket in the long term for Threadripper and EPYC, we can see a maximum of 48 cores and 96 threads from this die. The rumor is that there will be a second die for 7nm EPYC which will consist of 8 cores per core complex. This will allow for 16 cores off a single Zeppelin die, granting 7nm EPYC upto 64 cores and 128 threads. There’s no official word on this yet, but AMD could really disrupt the Intel Xeon market with such an outstanding core count. We will make sure to dig up more on this in future reports.
Now, we have confirmed the launch date of the processors which will be introduced to the HEDT market on 13th August 2018. There will be two Ryzen Threadripper processors which will hit the market, these would include:
Ryzen Threadripper 2990X (32 Core / 64 Thread)
Ryzen Threadripper 2950X (24 Core / 48 Thread)
https://wccftech.com/intel-amd-talent-wars-heat/AMD, led by Robert, started courting Martin Ashton with offers and finally in June of 2018, was able to bring him onboard as Corporate Vice President. This resulting counterstrike is one of the impetus’ behind a recent press release with AMD promoting Robert Gamma along with Mike Clark and Darren Grasby to leadership roles.
This was a huge win for Martin but his role in AMD is now more of an executive/leadership position than an engineering one. One of the reasons behind this is because his area of key competency, low power optimization, is actually already being overseen by Sam Naffziger – a celebrated microarchitect, and low power engineer, who had already shifted over to the GPU side from the CPU department at AMD. I have no doubts that Martin will be a great fit at AMD, but this is something that was quickly answered by Intel.
The third round continues
In response to this, Intel began firing back with some steals of their own. The third round in the talent wars, so to speak, is very quickly heating up. These are some of the key figures that recently made the move:
Alexander Lyashevsky, a very talented engineer and a corporate fellow at AMD was hired as the Senior Director of Machine Learning Algorithms and Software Architecture at Intel.
Jason Gunderson, another top CPU engineer and Sr. Director Program Managemen at AMD was brought on as Senior Director and Cheif of Staff Silicon Engineering at Intel.
Radhakrishna Giduthuri, a top AI engineer at AMD who had spent 7 years in their software architecture and AI department was snagged by Intel as a Deep Learning Architect in the AI Products Group.
There is another candidate, Mark Hirsh, who recently left AMD. He was the CVP of System Engineering at RTG and was VP Platform of Instinct and I have been told that Intel is currently in talks to bring him onboard as well. If the company manages to do that, combined with Raja, Chris, Jim Keller and Tom Forsyth, it would be one of the biggest talent hunts in this industry in the past few years.
Joseph Facca, is one of the key talent that was not taken directly from AMD but was approached form a different route. Joseph had previously been with AMD and led board design teams for ATI but had left in the September of 2016. He had been working in a much smaller company as an R&D expert and Intel brought him on board as an ‘industry leader’ to “create, design and deliver industry-leading discrete graphics products.
It remains to be seen how and when AMD will respond to this latest flurry of punches, but one thing is for sure, Intel is getting very serious about their GPU efforts. I have also heard rumors of them opening up shop in Canada that would be dedicated to this arm. AMD has already made a spectacular comeback in the x86 department, against all odds, and beating all expectations but now it also needs to win back some of the Radeon glory of olde.
https://hothardware.com/news/amd-zen-2-speculation-16-core-am4-cpus-15-percent-ipc-upliftThe same source also points to Zen 2 introducing up to 16-core processors for AM4 platforms (mainstream), up to 32-core chips for TR4 (enthusiast), and 64-core solutions for SP3 (server).
Simultaneous multithreading (SMT) allows separate instruction streams, or threads, to run concurrently on the same physical processor, or core.
The IBM® POWER7® processor under SUSE Linux Enterprise Server 11 SP1 supports the following SMT modes:
In this mode, 1 thread runs on the core
In this mode, 2 threads run on the core concurrently
In this mode, 4 threads run on the core concurrently
In ST mode, the thread associated with the core is known as the primary thread. In SMT2 mode, the additional thread is known as a secondary thread. In SMT4 mode, the next two additional threads are known as tertiary threads.
In this test, 23 of the spinning hard disks attached to System B are replaced by 52 73 GB SAS SSD devices for main database space.
Determining what SMT mode to run in is dependent on the threading capability of the workload and the overall utilization of the machine. SMT threads are not equivalent in their processing capabilities. The following tables of SMT mode test results show how SMT can be effective as the system becomes highly utilized.
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