X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=3d_gpu.mdwn;h=9be06907bf69cbb9f4b98a5ac35f020a1297f369;hb=bb11d27b3c5ff34f22afc0b06500bdef7d94dc0d;hp=6e10c6af1a28abf4c58ea396cef2ca325f87a264;hpb=fe342cfcb50990d13783b9eee5d90a5b28f8ced2;p=libreriscv.git

diff --git a/3d_gpu.mdwn b/3d_gpu.mdwn
index 6e10c6af1..9be06907b 100644
--- a/3d_gpu.mdwn
+++ b/3d_gpu.mdwn
@@ -1,26 +1,61 @@
-# RISC-V 3D GPU / CPU / VPU
+# Hybrid 3D GPU / CPU / VPU
+
+Creating a trustworthy processor for the world.
+
+Our [[3d_gpu/business_objectives]]
 
 Note: this is a **hybrid** CPU, VPU and GPU.  It is not, as many news articles
-are implying, a "dedicated exclusive GPU".  The option exists to **create**
-a stand-alone GPU product.  It is being *designed* to be a **complete**
-all-in-one processor (System-on-a-Chip).
+are implying, a "dedicated exclusive GPU".  The option exists to *create*
+a stand-alone GPU product (contact us if this is a product that you want).
+Our primary goal is to design a **complete** all-in-one processor
+(System-on-a-Chip) that happens to include libre-licensed VPU and GPU
+accelerated instructions as part of the actual - main - CPU itself.
+
+We seek investors, sponsors (whose contributions thanks to NLNet may be
+tax-deductible), engineers and potential customers, who are
+interested, as a first product, in the creation and use of an entirely
+libre low-power mobile class system-on-a-chip.  Comparative benchmark
+performance, pincount and price is the Allwinner A64, except that the
+power budget target is 2.5 watts in a 16x16mm 320 to 360 pin 0.8mm
+FBGA package.  Instead of single-issue higher clock rate, the design is
+multi-issue, aiming for around 800mhz.
+
+The lower pincount, lower power, and higher BGA pitch is all to reduce
+the cost of product development when it comes to PCB design and layout:
 
-We seek investors, sponsors, engineers and potential customers, who are
-interested in the creation and use of an entirely libre low-power mobile
-class system-on-a-chip.  Comparative benchmark performance, pincount and
-price is the Allwinner A64, except that the power budget target is 2.5 watts
-in a 16x16mm 320 to 360 pin 0.8mm FBGA package.
+* Above 4 watts requires metal packages, greater attention to thermal
+  management in the PCB design and layout, and much pricier PMICs.
+* 0.6mm pitch BGA and below requires much more expensive PCB manufacturing
+  equipment and more costly PCBA techniques.
+* Above 600 pins begins to reduce production yields as well as increase
+  the cost of testing and packaging.
 
-See:
+We can look at larger higher-power ASICs either later or, if funding
+is made available, immediately.
 
-* [[libre_3d_gpu]]
-* [[discussion]]
-* <http://lists.libre-riscv.org/pipermail/libre-riscv-dev/>
-* <https://www.crowdsupply.com/libre-risc-v/m-class>
+Recent applications to NLNet (Oct 2019) are for a test chip in 180nm,
+64 bit, single core dual issue, around 300 to 350mhz.  This will provide
+the confidence to go to higher geometries, as well as be a commercially
+viable embedded product in its own right. Tapeout deadline is Oct 2020.
 
-Progress:
+# Progress:
 
+* Feb 2020: OpenPower Foundation EULA released. Coriolis2 Layout experimentation begun. Dynamic Partitioned SIMD ALU created.
+* Jan 2020: New team members, Yehowshua and Michael.  Last-minute attendance of FOSDEM2020
+* Dec 2019: Second round NLNet questions answered.  External Review completed.  6 NLNet proposals accepted (EUR 200,000+)
+* Nov 2019: Alternative FP library to Berkeley softfloat developed. NLNet first round questions answered.
+* Oct 2019: 3D Standards continued.  POWER ISA considered.  Open 3D Alliance begins.  NLNet funding applications submitted.
+* Sep 2019: 3D Standards continued.  Additional NLNet Funding proposals discussed.
+* Aug 2019: Development of "Transcendentals" (SIN/COS/ATAN2) Specifications
+* Jul 2019: Sponsorship from Purism received.  IEEE754 FP Mul, Add, DIV,
+  FCLASS and FCVT pipelines completed.
+* Jun 2019: IEEE754 FP Mul, Add, and FSM "DIV" completed.
+* May 2019: 6600-style scoreboard started
+* Apr 2019: NLnet funding approved by independent review committee
+* Mar 2019: NLnet funding application first and second phase passed
+* Mar 2019: First successful nmigen pipeline milestone achieved with IEEE754 FADD
 * Feb 2019: Conversion of John Dawson's IEEE754 FPU to nmigen started
+* Jan 2019: Second version Simple-V preliminary proposal (suited to LLVM)
 * 2017 - Nov 2018: Simple-V specification preliminary draft completed
 * Aug 2018 - Nov 2018: spike-sv implementation of draft spec completed
 * Aug 2018: Kazan Vulkan Driver initiated
@@ -30,6 +65,7 @@ Progress:
 
 # News Articles
 
+* <https://www.phoronix.com/forums/forum/hardware/processors-memory/1133806-libre-risc-v-open-source-effort-now-looking-at-power-instead-of-risc-v/page7>
 * <https://hub.packtpub.com/a-libre-gpu-effort-based-on-risc-v-rust-llvm-and-vulkan-by-the-developer-of-an-earth-friendly-computer/>
 * <https://riscv.org/2018/10/packt-hub-article-a-libre-gpu-effort-based-on-risc-v-rust-llvm-and-vulkan-by-the-developer-of-an-earth-friendly-computer/>
 * <https://www.reddit.com/r/RISCV/comments/9jts9t/theres_a_new_libre_gpu_effort_building_on_riscv/>
@@ -44,9 +80,19 @@ Progress:
 * <https://www.reddit.com/domain/libre-riscv.org/>
 * <https://hardware.slashdot.org/comments.pl?sid=13447940&cid=58160868>
 * <https://www.phoronix.com/forums/forum/hardware/graphics-cards/1080755-libre-risc-v-gpu-aiming-for-2-5-watt-power-draw-continues-being-plotted/page5>
+* <https://www.phoronix.com/forums/forum/hardware/processors-memory/1070828-more-details-on-the-proposed-simple-v-extension-to-risc-v-for-gpu-workloads>
+* <https://slashdot.org/submission/9750302/nlnet-funds-development-of-a-libre-risc-v-3d-cpu>
+* <https://hardware.slashdot.org/story/19/06/02/0153243/nlnet-funds-development-of-a-libre-risc-v-3d-cpu>
+* <https://www.phoronix.com/forums/forum/hardware/graphics-cards/1104124-libre-risc-v-snags-50k-eur-grant-to-work-on-its-risc-v-3d-gpu-chip/page6>
+* <https://news.ycombinator.com/item?id=21112341>
+* <https://www.reddit.com/r/RISCV/comments/db04j3/libreriscv_3d_cpugpu_seeks_grants_for_ambitious/>
+* <https://hardware.slashdot.org/story/19/09/29/1845252/libre-risc-v-3d-cpugpu-seeks-grants-for-ambitious-expansion>
+* <https://forums.puri.sm/t/risc-v-m-class-effort-and-purism-donation/6528/15>
+* Dec 2019 ProLinux <https://www.pro-linux.de/news/1/27527/comm/1/show-all-comments.html>
+* Dec 2019 Phoronix <https://www.phoronix.com/forums/forum/hardware/graphics-cards/1148553-libre-risc-v-accelerator-secures-300k-eur-in-grants-still-undecided-about-the-isa/>
+* Feb 15 2020 Phoronix <https://www.phoronix.com/scan.php?page=news_item&px=OpenPOWER-ISA-EULA-Draft/>
+* Feb 15 2020 Slashdot OpenPOWER article <https://news.slashdot.org/story/20/02/16/1743222/openpower-foundation-releases-eula-for-power-isa>
 
-# Information Resources and Tutorials
+# Evaluations
 
-* <https://github.com/timvideos/litex-buildenv/wiki/LiteX-for-Hardware-Engineers>
-* <https://jeffrey.co.in/blog/2014/01/d-flip-flop-using-migen/>
-* <http://lists.libre-riscv.org/pipermail/libre-riscv-dev/2019-March/000705.html>
+* [[openpower]]