Гонозов Леонид. Технология SEQ|MPI. Сумма элементов вектора. Вариант 1 #98
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #98 +/- ##
==========================================
+ Coverage 94.03% 94.58% +0.55%
==========================================
Files 15 17 +2
Lines 486 536 +50
Branches 181 199 +18
==========================================
+ Hits 457 507 +50
Partials 29 29 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
|
aobolensk
reviewed
Nov 29, 2025
| @@ -0,0 +1,139 @@ | |||
| # Подсчёт числа слов в строке | |||
|
|
||
| bool GonozovLElemVecSumSEQ::ValidationImpl() { | ||
| return true; | ||
| // return static_cast<int>(GetInput().size()) > 0 && GetOutput() == 0.0;; |
Author
There was a problem hiding this comment.
Исправил, использую вариант, который был закомментирован
| | Mode | Count | Time, s | Speedup | Efficiency | | ||
| | ---- | ----- | -------- | ------- | ---------- | | ||
| | seq | 1 | 0.000241 | 1.00 | N/A | | ||
| | omp | 2 | 0.000421 | 0.572 | 28.6% | |
| | omp | 8 | - | - | - | | ||
|
|
||
| - Накладные расходы коммуникации полностью перекрывают выигрыш от распараллеливания | ||
| - В тесте 3 при 8 потоках накладных расходов настолько много, что это приводит к падению программы |
Member
There was a problem hiding this comment.
Are you sure this data is anyhow related to what you have implemented? We don't have threads
Author
There was a problem hiding this comment.
Неточность исправлена, имелась в виду работа с процессами
aobolensk
approved these changes
Dec 5, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Описание
SEQ: C помощью std::accumulate полностью проходим по элементам вектора и суммируем их
MPI: Исходный вектор разбивается на части и рассылается по всем процессам с использованием MPI_Scatterv. Далее на каждом из процессов происходит суммирование выделенной процессу части исходного вектора. Конечный результат суммируется и рассылается по всем процессам с помощью MPI_Allreduce.
Чек-лист
<фамилия>_<первая_буква_имени>_<короткое_название_задачи>clang-formatлокально в моем форке (нет ошибок форматирования)clang-tidyлокально в моем форке (нет предупреждений/ошибок)nesterov_a_vector_sum), а не вmaster