nick7566

nick7566 OP t1_j0t62bk wrote

Reply to Europe Gets an Exascale Supercomputer by nick7566

From the article:

>Frontier, the world’s first exascale supercomputer—or at least the first one that’s been made public—is coming online soon for general scientific use at Oak Ridge National Laboratory in Tennessee. Another such machine, Aurora, is seemingly on track to be completed any day at Argonne National Laboratory in Illinois. Now Europe’s getting up to speed. Through a €500 million pan-European effort, an exascale supercomputer called JUPITER (Joint Undertaking Pioneer for Innovative and Transformative Exascale Research) will be installed sometime in 2023 at the Forschungszentrum Jülich, in Germany.

10

nick7566 OP t1_ix7h278 wrote

Reply to Magic3D: High-Resolution Text-to-3D Content Creation (NVIDIA) by nick7566

Abstract:

>DreamFusion has recently demonstrated the utility of a pre-trained text-to-image diffusion model to optimize Neural Radiance Fields (NeRF), achieving remarkable text-to-3D synthesis results. However, the method has two inherent limitations: (a) extremely slow optimization of NeRF and (b) low-resolution image space supervision on NeRF, leading to low-quality 3D models with a long processing time. In this paper, we address these limitations by utilizing a two-stage optimization framework. First, we obtain a coarse model using a low-resolution diffusion prior and accelerate with a sparse 3D hash grid structure. Using the coarse representation as the initialization, we further optimize a textured 3D mesh model with an efficient differentiable renderer interacting with a high-resolution latent diffusion model. Our method, dubbed Magic3D, can create high quality 3D mesh models in 40 minutes, which is 2x faster than DreamFusion (reportedly taking 1.5 hours on average), while also achieving higher resolution. User studies show 61.7% raters to prefer our approach over DreamFusion. Together with the image-conditioned generation capabilities, we provide users with new ways to control 3D synthesis, opening up new avenues to various creative applications.

9

nick7566 OP t1_it0kn8p wrote

Reply to Waymo to launch robotaxi service in Los Angeles by nick7566

>Waymo said it plans to launch a robotaxi service in Los Angeles, another sign that the Alphabet subsidiary is accelerating its commercial ramp up.
>
>Waymo has had a presence in Los Angeles since 2019, periodically coming in to map neighborhoods, including downtown, Miracle Mile, Koreatown, Santa Monica, Westwood and West Hollywood.
>
>The announcement Wednesday has a decidedly more commercial aim. Initially, more than a dozen Waymo autonomous vehicles will be in Los Angeles and scale from there, according to Waymo’s new chief product officer Saswat Panigrahi, who most recently was vice president of strategy, product management and data science.
>
>The intent, he added, is that this will be a driverless robotaxi service that will operate 24 hours a day. In the run up to its eventual launch, Waymo is partnering with local groups MADD California and Los Angeles County Bicycle Coalition.

4