By: EduardoS (no.delete@this.spam.com), April 27, 2012 12:27 pm
Room: Moderated Discussions
David Kanter (dkanter@realworldtech.com) on 4/27/12 wrote:
---------------------------
>Absolutely. In fact, it's more useful in the context of the K8 than Sandy Bridge.
>The K8 cannot re-order so you REALLY want to calculate every address as soon as possible.
It's not just to calculate address as soon as possible, it also help in packing x86 instructions inside the chip and reduce the size of the forwarding network, if there was two decoupled AGUs there would be 5 sources from the forwarding network per ALU, coupled there are only four*.
* Does anyone knows if being a power of 2 helps?
---------------------------
>Absolutely. In fact, it's more useful in the context of the K8 than Sandy Bridge.
>The K8 cannot re-order so you REALLY want to calculate every address as soon as possible.
It's not just to calculate address as soon as possible, it also help in packing x86 instructions inside the chip and reduce the size of the forwarding network, if there was two decoupled AGUs there would be 5 sources from the forwarding network per ALU, coupled there are only four*.
* Does anyone knows if being a power of 2 helps?
| Topic | Posted By | Date |
|---|---|---|
| Phoronix tests GCC compiler flags and Bulldozer. | I.S.T. | 2012/04/19 02:05 AM |
| Single page view? | David Kanter | 2012/04/19 07:59 AM |
| Single page view? | wainwright | 2012/04/19 08:22 AM |
| Single page view? | slothrop | 2012/04/19 08:23 AM |
| Single page view? | David Kanter | 2012/04/19 08:31 AM |
| Single page view? | EduardoS | 2012/04/19 02:12 PM |
| Is there a single page view option for RWT articles? | anon | 2012/04/19 08:27 AM |
| Single page view? | Del | 2012/04/19 08:36 AM |
| Single page view? | slacker | 2012/04/19 02:56 PM |
| Single page view? | Del | 2012/04/22 05:09 AM |
| Single page view? | David Kanter | 2012/04/22 08:38 AM |
| Single page view? | Del | 2012/04/23 12:22 AM |
| Single page view? | Michael S | 2012/04/19 12:30 PM |
| Single page view? | Ungo | 2012/04/19 01:25 PM |
| Single page view? | Foo_ | 2012/04/19 11:17 PM |
| Single page view? | James | 2012/04/20 03:01 AM |
| There are ads on the web? | JJB | 2012/04/20 03:32 AM |
| What a bunch of freeloaders (NT) | slacker | 2012/04/20 12:44 PM |
| So are you, probably | iz | 2012/04/21 03:41 AM |
| Impression ad revenue | Paul A. Clayton | 2012/04/21 05:44 AM |
| So are you, probably | slacker | 2012/04/21 12:09 PM |
| So are you, probably | David Kanter | 2012/04/22 08:41 AM |
| So are you, probably | iz | 2012/04/22 02:57 PM |
| So are you, probably | Doug Siebert | 2012/04/22 11:37 AM |
| Aha! | David Kanter | 2012/04/22 02:45 PM |
| Aha! | bakaneko | 2012/04/22 07:49 PM |
| So are you, probably | iz | 2012/04/22 02:48 PM |
| That's not how the business works... | David Kanter | 2012/04/22 04:31 PM |
| That's not how the business works... | iz | 2012/04/23 12:49 AM |
| So are you, probably | slacker | 2012/04/22 10:31 PM |
| back to phoronix | Michael S | 2012/04/23 01:07 AM |
| So are you, probably | iz | 2012/04/23 02:29 AM |
| Membership at RWT | David Kanter | 2012/04/23 10:24 AM |
| So are you, probably | Jukka Larja | 2012/04/27 07:59 AM |
| So, what do people think of these numbers> | I.S.T. | 2012/04/19 06:34 PM |
| So, what do people think of these numbers> | Linus Torvalds | 2012/04/20 07:34 AM |
| So, what do people think of these numbers> | Kira | 2012/04/20 08:18 AM |
| So, what do people think of these numbers> | Linus Torvalds | 2012/04/20 09:05 AM |
| So, what do people think of these numbers> | Doug Siebert | 2012/04/20 08:00 PM |
| So, what do people think of these numbers> | Megol | 2012/04/21 08:05 AM |
| So, what do people think of these numbers> | Linus Torvalds | 2012/04/21 12:11 PM |
| Most problems are fixed... | Megol | 2012/04/24 06:00 AM |
| So, what do people think of these numbers> | bakaneko | 2012/04/20 10:16 AM |
| So, what do people think of these numbers> | bakaneko | 2012/04/20 10:37 AM |
| So, what do people think of these numbers> | Linus Torvalds | 2012/04/20 12:24 PM |
| So, what do people think of these numbers> | Joel | 2012/04/20 01:59 PM |
| So, what do people think of these numbers> | Kira | 2012/04/20 02:32 PM |
| So, what do people think of these numbers> | EduardoS | 2012/04/20 03:00 PM |
| Bulldozer's Oddities. | Joel | 2012/04/20 03:54 PM |
| In defense of Bulldozer's Oddities | David Kanter | 2012/04/20 04:32 PM |
| In defense of Bulldozer's Oddities | Exophase | 2012/04/20 06:11 PM |
| In defense of Bulldozer's Oddities | EduardoS | 2012/04/20 06:46 PM |
| In defense of Bulldozer's Oddities | Exophase | 2012/04/20 07:18 PM |
| In defense of Bulldozer's Oddities | anonymous | 2012/04/20 10:26 PM |
| In defense of Bulldozer's Oddities | JJB | 2012/04/20 10:34 PM |
| In defense of Bulldozer's Oddities | imaxx | 2012/04/21 06:21 AM |
| In defense of Bulldozer's Oddities | Michael S | 2012/04/21 09:42 AM |
| Bulldozer's integer execution units | David Kanter | 2012/04/25 03:29 PM |
| Bulldozer's integer execution units | Exophase | 2012/04/26 11:17 AM |
| Bulldozer's integer execution units | anonymous | 2012/04/26 02:15 PM |
| Bulldozer's integer execution units | EduardoS | 2012/04/26 02:40 PM |
| Bulldozer's integer execution units | Foo_ | 2012/04/27 07:21 AM |
| Bulldozer's integer execution units | Megol | 2012/04/27 12:38 PM |
| Bulldozer's integer execution units | EduardoS | 2012/04/26 02:47 PM |
| Bulldozer's integer execution units | Exophase | 2012/04/26 04:02 PM |
| Bulldozer's integer execution units | EduardoS | 2012/04/26 05:03 PM |
| Bulldozer's integer execution units | Exophase | 2012/04/26 05:24 PM |
| Bulldozer's integer execution units | EduardoS | 2012/04/26 06:18 PM |
| Bulldozer's cache memory performance | Heikki Kultala | 2012/04/28 12:18 AM |
| Bulldozer's cache memory performance | EduardoS | 2012/04/28 09:06 AM |
| Bulldozer's integer execution units | David Kanter | 2012/04/26 03:03 PM |
| Bulldozer's integer execution units | Exophase | 2012/04/26 03:59 PM |
| Bulldozer's integer execution units | David Kanter | 2012/04/26 09:53 PM |
| Bulldozer's integer execution units | Exophase | 2012/04/27 07:42 AM |
| Bulldozer's integer execution units | David Kanter | 2012/04/27 10:06 AM |
| Bulldozer's integer execution units | EduardoS | 2012/04/27 12:27 PM |
| K8 divided pipelines? | Paul A. Clayton | 2012/04/27 12:59 PM |
| Bulldozer's integer execution units | Michael S | 2012/04/27 03:37 AM |
| Bulldozer's integer execution units | Exophase | 2012/04/27 07:33 AM |
| Bulldozer's integer execution units | anonymous | 2012/04/27 08:03 AM |
| Renaming Flags | Konrad Schwarz | 2012/04/27 02:04 AM |
| Renaming Flags | none | 2012/04/27 03:03 AM |
| Renaming Flags | Megol | 2012/04/27 11:42 AM |
| Bulldozer's integer execution units | hcl64 | 2012/04/27 03:31 PM |
| VEX supports 3+ operands. FPU have renaming already(NT) | Megol | 2012/04/28 07:20 AM |
| In defense of Bulldozer's Oddities | Linus Torvalds | 2012/04/21 11:26 AM |
| Thanks for the lesson | JJB | 2012/04/21 01:23 PM |
| Side note.. | Linus Torvalds | 2012/04/21 01:57 PM |
| In defense of Bulldozer's Oddities | Exophase | 2012/04/21 11:13 AM |
| In defense of Bulldozer's Oddities | EduardoS | 2012/04/21 11:53 AM |
| In defense of Bulldozer's Oddities | Gionatan Danti | 2012/04/21 11:42 AM |
| In defense of Bulldozer's Oddities | hcl64 | 2012/04/27 04:07 PM |
| In defense of Bulldozer's Oddities | David Kanter | 2012/04/28 05:29 AM |
| In defense of Bulldozer's Oddities | hcl64 | 2012/04/28 01:44 PM |
| In defense of Bulldozer's Oddities | David Kanter | 2012/04/28 08:42 PM |
| In defense of Bulldozer's Oddities | hcl64 | 2012/04/28 09:39 PM |
| Bulldozer's Oddities. | EduardoS | 2012/04/20 05:05 PM |
| Bulldozer's Oddities. | anon | 2012/04/20 07:32 PM |
| Bulldozer's Oddities. | EduardoS | 2012/04/21 11:37 AM |
| Bulldozer's Oddities. | anon | 2012/04/21 09:16 PM |
| Bulldozer's Oddities. | EduardoS | 2012/04/21 09:43 PM |
| Bulldozer's Oddities. | anon | 2012/04/22 01:09 AM |
| Bulldozer's Oddities. | EduardoS | 2012/04/22 12:57 PM |
| Bulldozer's Oddities. | anon | 2012/04/22 03:17 PM |
| Bulldozer's Oddities. | EduardoS | 2012/04/22 04:05 PM |
| Bulldozer's Oddities. | anon | 2012/04/22 04:42 PM |
| Bulldozer's Oddities. | anon | 2012/04/22 05:01 PM |
| Bulldozer's Oddities. | EduardoS | 2012/04/22 09:28 PM |
| Bulldozer's Oddities. | anon | 2012/04/22 10:05 PM |
| Bulldozer's isn't bad. | a reader | 2012/04/21 09:01 AM |
| Bulldozer's isn't bad. | Kira | 2012/04/21 10:29 AM |
| Bulldozer's isn't bad. | hcl64 | 2012/04/27 04:58 PM |
| Bulldozer's isn't bad. | anon | 2012/04/27 05:16 PM |
| Bulldozer's isn't bad. | hcl64 | 2012/04/27 06:33 PM |
| Bulldozer's isn't bad. | rwessel | 2012/04/27 10:12 PM |
| Bulldozer's isn't bad. | EduardoS | 2012/04/28 08:29 AM |
| Bulldozer's isn't bad. | EduardoS | 2012/04/28 08:30 AM |
| Bulldozer's isn't bad. | Michael S | 2012/04/28 11:36 AM |
| Bulldozer is made for SPEC fp | Pelle-48 | 2012/04/21 10:41 AM |
| Bulldozer's Oddities. | mpx | 2012/04/22 02:47 AM |
| Bulldozer's Oddities. | EduardoS | 2012/04/22 12:57 PM |
| Bulldozer's Oddities. | mpx | 2012/04/23 06:04 AM |
| Bulldozer's Oddities. | Eric | 2012/04/23 11:33 AM |
| Bulldozer's Oddities. | EduardoS | 2012/04/23 01:22 PM |
| Bulldozer's Oddities. | Eric | 2012/04/23 06:30 PM |
| Bulldozer's Oddities. | hcl64 | 2012/04/27 05:16 PM |
| Bulldozer's Oddities. | Y | 2012/04/25 03:34 AM |
| Bulldozer's IDIV | Heikki Kultala | 2012/04/27 09:56 PM |
| Bulldozer's IDIV | Y | 2012/04/30 12:51 AM |
| Bulldozer's IDIV | EduardoS | 2012/04/30 04:39 AM |
| Bulldozer's IDIV | P3Dnow | 2012/05/08 12:23 AM |
| Bulldozer's IDIV | Exophase | 2012/05/08 06:37 AM |
| Bulldozer's Oddities. | EduardoS | 2012/04/23 01:15 PM |
| Clustered MT as SMT for high frequency | Paul A. Clayton | 2012/04/20 03:10 PM |
| Clustered MT as SMT for high frequency | hcl64 | 2012/04/27 11:56 PM |
| Clustered MT as SMT for high frequency | anonymous | 2012/04/28 12:43 AM |
| Clustered MT as SMT for high frequency | hcl64 | 2012/04/28 01:59 PM |
| Clustered MT as SMT for high frequency | anonymous | 2012/04/28 07:45 PM |
| Clustered MT as SMT for high frequency | anon | 2012/04/28 01:13 AM |
| Clustered MT as SMT for high frequency | hcl64 | 2012/04/28 02:23 PM |
| Clustered MT as SMT for high frequency | anon | 2012/04/28 05:19 PM |
| Clustered MT as SMT for high frequency | hcl64 | 2012/04/28 06:58 PM |
| Clustered MT as SMT for high frequency | David Kanter | 2012/04/28 05:38 AM |
| Guessed meaning of "strong dependency model" | Paul A. Clayton | 2012/04/28 06:24 AM |
| Guessed meaning of "strong dependency model" | EduardoS | 2012/04/28 08:46 AM |
| *Right meaning* about "strong dependency model" | hcl64 | 2012/04/28 03:59 PM |
| Clustered MT as SMT for high frequency | hcl64 | 2012/04/28 03:24 PM |
| Clustered MT as SMT for high frequency | anonymous | 2012/04/28 07:50 PM |
| Clustered MT as SMT for high frequency | hcl64 | 2012/04/28 08:47 PM |
| SNB width | David Kanter | 2012/04/28 08:48 PM |
| SNB width | hcl64 | 2012/04/29 01:24 AM |
| Clustered MT as SMT for high frequency | David Kanter | 2012/04/28 08:56 PM |
| Clustered MT as SMT for high frequency | hcl64 | 2012/04/28 10:44 PM |
| SOI, FD vs. PD | David Kanter | 2012/04/29 06:19 AM |
| SOI, FD vs. PD | hcl64 | 2012/04/29 04:31 PM |
| SOI, FD vs. PD | David Kanter | 2012/04/29 10:26 PM |
| SOI, FD vs. PD | hcl64 | 2012/04/30 07:08 AM |
| SOI, FD vs. PD | David Kanter | 2012/04/30 08:59 AM |
| SOI, FD vs. PD | hcl64 | 2012/04/30 05:10 PM |
| SOI, FD vs. PD | David Kanter | 2012/04/30 05:32 PM |
| SOI, FD vs. PD | hcl64 | 2012/04/30 09:47 PM |
| SOI, FD vs. PD | David Kanter | 2012/05/01 01:24 AM |
| SOI, FD vs. PD | hcl64 | 2012/05/01 04:46 AM |
| SOI, FD vs. PD | hcl64 | 2012/05/01 05:37 AM |
| SOI, FD vs. PD | David Kanter | 2012/05/01 07:19 AM |
| SOI, FD vs. PD | hcl64 | 2012/05/01 06:39 AM |
| PD-SOI | David Kanter | 2012/05/02 11:22 AM |
| SOI, FD vs. PD | slacker | 2012/04/30 07:10 PM |
| SOI, FD vs. PD | David Kanter | 2012/04/30 09:16 PM |
| SOI, FD vs. PD | slacker | 2012/05/01 09:04 PM |
| SOI, FD vs. PD | David Kanter | 2012/05/02 07:19 AM |
| SOI, FD vs. PD | zou | 2012/05/02 11:23 AM |
| Previous discussion of clustered MT | Paul A. Clayton | 2012/04/28 06:00 AM |
| Previous discussion of clustered MT | hcl64 | 2012/04/28 08:38 PM |
| Previous discussion of clustered MT | David Kanter | 2012/04/30 03:37 PM |
| Previous discussion of clustered MT | hcl64 | 2012/04/30 06:24 PM |
| Previous discussion of clustered MT | David Kanter | 2012/04/30 06:40 PM |
| Previous discussion of clustered MT | hcl64 | 2012/05/01 08:15 AM |
| Latency issues | David Kanter | 2012/05/02 11:01 AM |
| So, what do people think of these numbers> | Megol | 2012/04/21 12:57 AM |