David Schor

@david_schor

Semiconductor logic and computer architectures. Other interests: vintage chips, early computer systems, and collector. Own random thoughts. See also .

New York, USA
WikiChip.org
Joined August 2012
699 Photos and videos Photos and videos

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  1. Retweeted
    10 hours ago

    The Khronos Group has ratified and publicly released Vulkan Ray Tracing provisional extensions! Learn more:

    3 replies 54 retweets 119 likes
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  2. Retweeted
    Mar 16

    A message from me and my dad, .

    7,778 replies 182,636 retweets 474,680 likes
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  3. Retweeted
    Mar 16

    Background: a piece from about the transition and devices based on it. Looking at recent developments relevant to computing.

    4 retweets 7 likes
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  4. Mar 15

    Good to see some taking notice, but tweeting does nothing and her warning is falling on deaf ears. People are not taking this seriously and there is no public awareness for 'flattening the curve'. Bars/restaurants were packed as usual in NYC last night.

    To everyone in NYC but ESPECIALLY healthy people & people under 40 (bc from what I’m observing that’s who needs to hear this again): PLEASE stop crowding bars, restaurants, and public spaces right now. Eat your meals at home. If you are healthy, you could be spreading COVID.
    Show this thread
    4 replies 1 retweet 13 likes
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  5. Mar 14

    I drove by one of the test sites today. They said everything is going extremely smoothly and anyone who needed to be tested is being tested. Very different from other places.

    2 replies 5 likes
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  6. Mar 14

    I ditched NYC for my PA home because I am convinced the city is going to look like 3x Italy alone. They didn't even close schools! Meanwhile in PA, LVHN has an online+phone screening and 10 test sites have been setup. People w/o insurance don't have to pay

    1 reply 1 retweet 11 likes
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  7. Mar 9

    It works you can actually buy stuff now.

    Local Costco started putting 1limit/day/member on most basic stuff such as disinfecting wipes, toilet paper, flour, water, etc.. also I noticed they doubled down on the quantities stocked of their own Kirkland brand. They can probably control that supply chain better.
    1 reply
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  8. Mar 9

    Local Costco started putting 1limit/day/member on most basic stuff such as disinfecting wipes, toilet paper, flour, water, etc.. also I noticed they doubled down on the quantities stocked of their own Kirkland brand. They can probably control that supply chain better.

    1 reply 1 retweet 3 likes
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  9. Mar 8

    What do you do if you are stuck on 14nm for 1 more gen? If you are IBM you ask your physical design team to pull a rabbit out of a hat & double your eDRAM density so you can stick 355MiB of cache in your CPU and 960MiB of L4 cache in your system controller

    IBM doubles its 14-nanometer eDRAM density, enabling the packing of hundreds of additional megabytes of cache on the latest z15 microprocessor and system controller.
    2 replies 8 retweets 42 likes
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  10. Retweeted
    Mar 8

    IBM doubles its 14-nanometer eDRAM density, enabling the packing of hundreds of additional megabytes of cache on the latest z15 microprocessor and system controller.

    2 replies 31 retweets 64 likes
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  11. Mar 6

    Another interesting side-channel paper. This one exploits the way-prediction implementation on AMD CPUs to leak data.

    With "Take A Way: Exploring the Security Implications of AMD’s Cache Way Predictors", we reverse-engineered AMD's L1D cache way predictor, resulting in two new attack techniques. Accepted @ '20 - - /cc
    2 replies 2 retweets 18 likes
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  12. Retweeted
    Mar 6

    We're offering substantial free GPU resources to any team working on COVID-19-related machine learning or deep learning research. Please spread the word. DMs are open.

    2 replies 170 retweets 247 likes
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  13. Mar 6

    I just realized that the number of confirmed cases surpassed 20K today (outside of China).

    1 like
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  14. Mar 5

    Forrest Norrod says they believe EPYC will reach double-digit server market share by Q2 of this year.

    1 retweet 12 likes
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  15. Mar 5

    Working on improving compute density and chiplets capabilities. 'X3D' approach which will exploit packaging even further.

    4 replies 7 retweets 20 likes
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  16. Mar 5

    AMD claims process technology superiority but expects that competitor 'to come back'.

    2 replies 4 retweets 24 likes
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  17. Mar 5

    Number of Zen cores shipped doubles every 2 years ;)

    4 replies 7 retweets 52 likes
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  18. Mar 5

    AMD is bifurcating its GPU lineup going forward with a new 'CDNA' for data centers (HPC/ML). This mirrors what Nvidia has been doing and what Intel says it is doing.

    1 reply 11 retweets 30 likes
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  19. Mar 5

    AMD sees lots of packaging opportunities. 3D stacking will sure spark lots of speculations.

    1 reply 2 retweets 9 likes
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  20. Mar 5

    The labels for Cerebras/Habana (acquired) are switched, my apologies. Everything else is correct.

    1 retweet
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