ezyang

I really like Scuba (Meta's internal real-time database system). The distributed, real-time database part of Scuba is quite difficult (and expensive) to replicate, but I also really like Scuba's UI for doing queries, and I have found myself wishing that I have access to it even for "small" databases, e.g., I have a sqlite dataset I want to explore.

Here's a screenshot of this UI from https://research.facebook.com/publications/scuba-diving-into-data-at-facebook/:

Pivotal ideas:

• Time series by default. In the dedicated "time series" view, there are many features specifically oriented towards working towards tables that represent events that occurred over time: the start, end, compare, aggregate and granularity fields all specially privilege the timestamp field. In fact, you can't log events to Scuba's backing data store without a timestamp, they always come with one. (Scuba a

ezyang

I need to add a progress bar to the application that shows progress reading the compressed dump files. The bar should display: 1. A visual progress bar 2. Bytes/sec processing rate 3. Bytes processed and percent completion 4. Update every 100ms

Let's analyze the code to understand where to integrate the progress bar:

1. The application processes Reddit data (comments and submissions) from compressed JSON files

ezyang

<think>
I need to add a progress bar to the application that shows progress reading the compressed dump files. The bar should display:
1. A visual progress bar
2. Bytes/sec processing rate
3. Bytes processed and percent completion
4. Update every 100ms

Let's analyze the code to understand where to integrate the progress bar:

1. The application processes Reddit data (comments and submissions) from compressed JSON files

ezyang

Prompt:

I am trying to understand the lifecycle of the cuda graph memory pool, e.g., as interacted with in _cuda_releasePool. In particular, the implementation of _use_cuda_memory_pool_manager seems to suggest that the pool is released at the end of the context manager. But in the call sites of this function, it doesn't seem that the pool should be released (especially when we are allocating inputs for the cuda graph region). What is going on?

Response:

You're right to notice this apparent discrepancy. Let's break down what's happening with the CUDA graph memory pool lifecycle:

1. The _use_cuda_memory_pool_manager context manager is indeed calling _cuda_releasePool at the end of its context. However, this doesn't necessarily mean the pool is being destroyed or fully released.
2. The _cuda_releasePool function is part of the CUDA caching allocator's API, and its behavior is more nuanced than just destroying the pool:
   • It decrements the reference count for the pool.

• If the reference c

ezyang

Prompt:

This is binary data corresponding to a serialized Thrift struct: Copy 18 03 66 6f 6f 16 c8 01 16 b0 df fd eb 0c 16 02 00 The code that generated it is Copy CppExampleLogEntry( userid=100, ip="foo", weight=1, time=CUR_TIME ) Explain, byte-by-byte, the meaning of each byte in the binary data.

Response:

I'll explain the binary data byte-by-byte based on the Thrift Compact protocol encoding described in the document:

1. 18: This is a field header byte.
   • 0001 1000 in binary
   • dddd (field id delta) = 1 (first field)

• tttt (field type) = 8 (BINARY, used for strings)

ezyang

import json
import sys
import re

pattern = re.compile(r'^(\s*)if TEMPLATE[^:]*:\s*\n((?:\1\s{4}.*\n|\n)*?)\1else:\s*\n(?:\1\s{4}.*\n|\n)*?(\1(?=\S|$))', re.MULTILINE)

def replace(match):
    indent = match.group(1)
    true_branch = match.group(2)
    true_branch = re.sub(r'^\s{' + str(len(indent) + 4) + '}', indent, true_branch, flags=re.MULTILINE)

ezyang

# AOT ID: ['8_inference']
from ctypes import c_void_p, c_long
import torch
import math
import random
import os
import tempfile
from math import inf, nan
from torch._inductor.hooks import run_intermediate_hooks

ezyang

diff --git a/fbcode/caffe2/torch/_dynamo/convert_frame.py b/fbcode/caffe2/torch/_dynamo/convert_frame.py
--- a/fbcode/caffe2/torch/_dynamo/convert_frame.py
+++ b/fbcode/caffe2/torch/_dynamo/convert_frame.py
@@ -135,6 +135,8 @@
 
 initial_global_state: Optional[GlobalStateGuard] = None
 
+DEAD = False
+
 

ezyang

system: You are an autoregressive language model that has been fine-tuned with instruction-tuning and RLHF. You carefully provide accurate, factual, thoughtful, nuanced answers, and are brilliant at reasoning. If you think there might not be a correct answer, you say so. Since you are autoregressive, each token you produce is another opportunity to use computation, therefore you always spend a few sentences explaining background context, assumptions, and step-by-step thinking BEFORE you try to answer a question. Your users are experts in AI and ethics, so they already know you're a language model and your capabilities and limitations, so don't remind them of that. They're familiar with ethical issues in general so you don't need to remind them about those either. Don't be verbose in your answers, but do provide details and examples where it might help the explanation. When showing Python code, minimise vertical space, and do not include comments or docstrings; you do not need to follow PEP8, since your us

ezyang

**system**:
You are an autoregressive language model that has been fine-tuned with instruction-tuning and RLHF. You carefully provide accurate, factual, thoughtful, nuanced answers, and are brilliant at reasoning. If you think there might not be a correct answer, you say so. Since you are autoregressive, each token you produce is another opportunity to use computation, therefore you always spend a few sentences explaining background context, assumptions, and step-by-step thinking BEFORE you try to answer a question. Your users are experts in AI and ethics, so they already know you're a language model and your capabilities and limitations, so don't remind them of that. They're familiar with ethical issues in general so you don't need to remind them about those either. Don't be verbose in your answers, but do provide details and examples where it might help the explanation. When showing Python code, minimise vertical space, and do not include comments or docstrings; you do not need to follow PEP8, since your us