Al Mc D (@almc_d) header
Al Mc D (@almc_d) profile picture

Al Mc D

@almc_d
 Fingal, Ireland
Joined February 2020
  • Tweets589
  • Following259
  • Followers874
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Photo by Al Mc D (@almc_d)Photo by Al Mc D (@almc_d)Photo by Al Mc D (@almc_d)Photo by Al Mc D (@almc_d)Photo by Al Mc D (@almc_d)Photo by Al Mc D (@almc_d)Photo by Al Mc D (@almc_d)Photo by Al Mc D (@almc_d)Photo by Al Mc D (@almc_d)
Sunday Evening somewhere in Memphis, a small crew of infra staff, including engineers that refuse to go home until the job is done. Hope you’re hungry @grok, we’re building what you crave.
Image from Al Mc D (@almc_d)
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Colossus 1 scaled to 100k GPUs on an Ethernet backend, not InfiniBand. Spectrum-X switches, 400G per GPU, 3-tier fabric, 95% throughput (vs ~60% for standard Ethernet) There's plenty of life in Ethernet. Congestion control is everything.
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Source: NVIDIA's Oct 2024 release on Colossus + Spectrum-X (SN5600 64x800G switches, BlueField-3 SuperNICs, adaptive routing): nvidianews.nvidia.com/news/s… Good companion read, Meta on RoCE at scale: engineering.fb.com/2024/08/0…
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The radix of network fabric switches in CLOS designs determines much of the infra design choices and building blocks of capacity when you are building colossus scale systems.
Elon Musk (@elonmusk) profile pictureElon Musk
@elonmuskSep 25
Replying to @elonmusk @minchoi
The strange multiple of 110k is due to the number of fiber optic cables that can be plugged into a central switch
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One of us! One of us!
JJ Watt (@JJWatt) profile pictureJJ Watt
@JJWattJul 18
Replying to @DougDribbl88
Order me a Guinness. Be there shortly.
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Match tracker is 👌 teapawt.net/i/jf/soccer/league/mat…
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COYGIB come on Dublin!
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Let’s go @soapiemcd! 💙
DublinLGFA (@dublinladiesg) profile pictureDublinLGFA
@dublinladiesgJul 8
🚨SQUAD NEWS ... Dublin minor management have announced their squad for this Thursdays eagerly awaited semi- final vs Cork. 🔗dublingaa.ie/news/lgfa-dubli… @ZuCarIreland All Ireland Minor Championship Semi-Final 2026. 🔵Dublin vs Cork 🔴 🗓️Thursday July 9th | 19.30pm 📍Moyne Templetuohy GAA, Tipperary #DublinLGFA #COYGIB #UpTheDubs
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We are now @spacexai.
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Pico Lopes of Cape Verde and @ShamrockRovers, shades of McGrath @Paulmcgrath5 in 1994 v Italy. What a performance, bualadh bos 👏
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$SPCX
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Al Mc D retweeted
SpaceX (@SpaceX) profile picture
SpaceX
@SpaceXJun 4
SpaceX is the only company building the infrastructure of the future across space, connectivity, and AI → spacexipo.com
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DublinLGFA (@dublinladiesg) profile pictureDublinLGFA
@dublinladiesgApr 22
With just 3 days to go this Sat's @LeinsterLGFA Minor A championship final vs Meath @MauriceGrehan caught up with team capt Sophie McDonnell @naomhmearnog & vice captain Laoise Murtagh @StMaursGaa to hear how preparations are going for the big game. Maurice also spoke to team manager Declan Patton who is looking forward to his 3rd Leinster minor final in a row. #DublinLGFA #COYGIB #UpTheDubs
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Minor LFC Rd. 3 Full time Dublin 1-14 (17) Kildare 1-13 (16) #COYGIB
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Let’s go 💙
DublinLGFA (@dublinladiesg) profile pictureDublinLGFA
@dublinladiesgFeb 27
TEAM NEWS - Dublin minor team named for this Saturday's (Feb 28th) @LeinsterLGFA championship Rd 1 fixture vs Meath Skryne GFC | 14:00pm dublingaa.ie/news/lgfa-dubli… #DublinLGFA #COYGIB #UpTheDubs
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Hello grok 4.20
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Scaling and operating the world’s largest supercompute cluster is not easy. Thankfully for @grok the @xai team is unrivalled in talent and drive. We’re looking for more driven top talent 🚀
Elon Musk (@elonmusk) profile pictureElon Musk
@elonmuskJan 30
Replying to @testerlabor
We had some power uptime issues due to the extremely cold weather and some construction equipment taking out power lines. As a result, Grok 4.20 training is a few weeks delayed to mid Feb.
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Al Mc D retweeted
Elon Musk (@elonmusk) profile picture
Elon Musk
@elonmuskJan 30
Replying to @testerlabor
We had some power uptime issues due to the extremely cold weather and some construction equipment taking out power lines. As a result, Grok 4.20 training is a few weeks delayed to mid Feb.
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José Mourinho celebrating with the ball boy, again. Man’s got an aura. You gotta love it.
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